diff --git a/main/lang/english/admin.inc.php b/main/lang/english/admin.inc.php
index e0d3aea249..b31186dee1 100644
--- a/main/lang/english/admin.inc.php
+++ b/main/lang/english/admin.inc.php
@@ -1403,4 +1403,56 @@ $EnableNanogongComment = "Nanongong is a recorder - voice player that allows you
$ExerciseAndLPsAreInvisibleInTheNewCourse = "Exercises and learning paths are invisible in the new course";
$YouMustChooseARelationType = "You have to choose a relation type";
$SelectARelationType = "Relation type selection";
+$AddUserToURL = "Add user to this URL";
+$CourseBelongURL = "Course registered to the URL";
+$AtLeastOneSessionAndOneURL = "You have to select at least one session and one URL";
+$SelectURL = "Select a URL";
+$SessionsWereEdited = "The sessions have been updated.";
+$URLDeleted = "URL deleted.";
+$CannotDeleteURL = "Cannot delete this URL.";
+$CoursesInPlatform = "Courses on the platform.";
+$UsersEdited = "Users updated.";
+$CourseHome = "Course homepage";
+$ComingSoon = "Coming soon...";
+$DummyCourseOnlyOnTestServer = "Dummy course content - only available on test platforms.";
+$ThereAreNotSelectedCoursesOrCoursesListIsEmpty = "There are no selected courses or the courses list is empty.";
+$CodeTwiceInFile = "A code has been used twice in the file. This is not authorized. Courses codes should be unique.";
+$CodeExists = "This code exists";
+$UnkownCategoryCourseCode = "The category could not be found";
+$LinkedCourseTitle = "Title of related course";
+$LinkedCourseCode = "Linked course's code";
+$AssignUsersToSessionsAdministrator = "Assign users to sessions administrator";
+$AssignedUsersListToSessionsAdministrator = "Assign a users list to the sessions administrator";
+$GroupDeleted = "Class deleted.";
+$CannotDeleteGroup = "The class could not be deleted.";
+$SomeGroupsNotDeleted = "Some of the classes could not be deleted.";
+$DontUnchek = "Don't uncheck";
+$Modified = "Modified";
+$SessionsList = "Sessions list";
+$Promotion = "Promotion";
+$UpdateSession = "Update session";
+$Path = "Path";
+$SelectOptionExport = "Select export option";
+$FieldEdited = "Field added.";
+$LanguageParentNotExist = "The parent language does not exist.";
+$TheSubLanguageHasNotBeenRemoved = "The sub-language has not been removed.";
+$ShowOrHide = "Show/Hide";
+$StatusCanNotBeChangedToHumanResourcesManager = "The status of this user cannot be changed to human resources manager.";
+$FieldTaken = "Field taken";
+$UsersSubscribedToSeveralCoursesBecauseOfVirtualCourses = "Users subscribed to several courses through the use of virtual courses.";
+$NoUrlForThisUser = "This user doesn't have a related URL.";
+$ExtraData = "Extra data";
+$ExercisesInLp = "Exercises in learning paths";
+$Id = "Id";
+$ThereWasAnError = "There was an error.";
+$CantMoveToTheSameSession = "Cannot move this to the same session.";
+$StatsMoved = "Stats moved.";
+$UserInformationOfThisCourse = "User information for this course";
+$OriginCourse = "Original course";
+$OriginSession = "Original session";
+$DestinyCourse = "Destination course";
+$DestinySession = "Destination session";
+$CourseDoesNotExistInThisSession = "The course does not exist in this session. The copy will work only from one course in one session to the same course in another session.";
+$UserNotRegistered = "User not registered.";
+$ViewStats = "View stats";
?>
\ No newline at end of file
diff --git a/main/lang/english/agenda.inc.php b/main/lang/english/agenda.inc.php
index 996b3efbaa..d6ca66ab46 100644
--- a/main/lang/english/agenda.inc.php
+++ b/main/lang/english/agenda.inc.php
@@ -77,4 +77,6 @@ $IsNotiCalFormatFile = "This file is not in iCal format";
$RepeatEvent = "Repeat event";
$RepeatDate = "Repeat date";
$EndDateMustBeMoreThanStartDate = "End date must be more than the start date";
+$SelectACourse = "Select a course";
+$PleaseSelectACourseOrASessionInTheLeftColumn = "Please select a course or a session in the sidebar.";
?>
\ No newline at end of file
diff --git a/main/lang/english/document.inc.php b/main/lang/english/document.inc.php
index 7121777a3b..1abd6b01fa 100644
--- a/main/lang/english/document.inc.php
+++ b/main/lang/english/document.inc.php
@@ -271,4 +271,5 @@ $FirstSelectALanguage = "Please select a language";
$RenameAndComment = "Rename and comment";
$YouAreCurrentlyUsingXOfYourX = "You are currently using %s MB (%s) of your %s MB.";
$UplUploadFailedSizeIsZero = "There was a problem uploading your document: the received file had a 0 bytes size on the server. Please, review your local file for any corruption or damage, then try again.";
+$NewImage = "New image";
?>
\ No newline at end of file
diff --git a/main/lang/english/dropbox.inc.php b/main/lang/english/dropbox.inc.php
old mode 100755
new mode 100644
index 8d8dbab7c4..cbac8f1b7a
--- a/main/lang/english/dropbox.inc.php
+++ b/main/lang/english/dropbox.inc.php
@@ -125,4 +125,7 @@ $ErrorNoFilesInFolder = "This folder is empty";
$AddComment = "Save feedback";
$SentCatgoryDeleted = "The folder has been deleted";
$ReceivedCatgoryDeleted = "The folder has been deleted";
+$InvalideUserDetected = "Invalid user detected.";
+$InvalideGroupDetected = "Invalid group detected.";
+$OverviewOfFilesInThisZip = "Overview of diles in this Zip";
?>
\ No newline at end of file
diff --git a/main/lang/english/exercice.inc.php b/main/lang/english/exercice.inc.php
index ba6e063fe8..254f5b4b31 100644
--- a/main/lang/english/exercice.inc.php
+++ b/main/lang/english/exercice.inc.php
@@ -386,4 +386,27 @@ $EnableStartTime = "Enable start time";
$EnableEndTime = "Enable end time";
$ExerciseAvailableFromX = "Exercise available from %s";
$ExerciseAvailableUntilX = "Exercise available until %s";
+$TestLimitsAdded = "Tests limits added";
+$AddLimits = "Add limits";
+$Unlimited = "Unlimited";
+$LimitedTime = "Limited time";
+$LimitedAttempts = "Limited attempts";
+$Times = "Times";
+$Random = "Random";
+$ExerciseTimerControlMinutes = "Enable exercise timer controller.";
+$Numeric = "Numerical";
+$Acceptable = "Acceptable";
+$Hotspot = "Zones sur image";
+$ChangeTheVisibilityOfTheCurrentImage = "Change the visibility of the current image";
+$Steps = "Steps";
+$OriginalValue = "Original value";
+$ChooseAnAnswer = "Choose an answer";
+$ImportExercise = "Import exercise";
+$MultipleChoiceMultipleAnswers = "Multiple choice, multiple answers";
+$MultipleChoiceUniqueAnswer = "Multiple choice, unique answer";
+$HotPotatoesFiles = "HotPotatoes files";
+$HotPotatoes = "HotPotatoes";
+$OAR = "Zones at risk";
+$TotalScoreTooBig = "Total score is too big";
+$InvalidQuestionType = "Invalid question type";
?>
\ No newline at end of file
diff --git a/main/lang/english/forum.inc.php b/main/lang/english/forum.inc.php
index 83d82da545..a0dc1e5f99 100644
--- a/main/lang/english/forum.inc.php
+++ b/main/lang/english/forum.inc.php
@@ -144,4 +144,8 @@ $PreviewImage = "Preview image";
$UpdateImage = "Update Image";
$EnableTimeLimits = "Enable time limits";
$RemoveSearchResults = "Clean search results";
+$InsertQualificationCorrespondingToMaxScore = "Insert qualification corresponding to max score";
+$ThreadMoved = "Thread moved";
+$MigrateForum = "Migrate forum";
+$YouWillBeNotified = "You will be notified";
?>
\ No newline at end of file
diff --git a/main/lang/english/gradebook.inc.php b/main/lang/english/gradebook.inc.php
index c9e1bf7441..077b6c1c2a 100644
--- a/main/lang/english/gradebook.inc.php
+++ b/main/lang/english/gradebook.inc.php
@@ -191,8 +191,32 @@ $CertificateMinimunScoreIsRequiredAndMustNotBeMoreThan = "Certificate minimun sc
$LinkMod = "Save";
$EditLink = "Edit link";
$CategoryDeleted = "The category has been deleted.";
-$AreYouSureToLockedTheEvaluation = "Are you sure to locked the evaluation?";
-$AreYouSureToUnLockedTheEvaluation = "Are you sure to unlocked the evaluation?";
+$AreYouSureToLockedTheEvaluation = "Are you sure you want to lock the evaluation?";
+$AreYouSureToUnLockedTheEvaluation = "Are you sure you want to unlock the evaluation?";
$EvaluationHasBeenUnLocked = "Evaluation has been unlocked";
$EvaluationHasBeenLocked = "Evaluation has been locked";
+$Over100 = "Over 100";
+$UnderMin = "Under the minimum.";
+$MoveWarning = "Warning: moving gradebook elements can be dangerous for the data inside your gradebook.";
+$CategoryMoved = "The gradebook has been moved.";
+$EvaluationMoved = "The gradebook component has been moved.";
+$NoLinkItems = "There are not linked components.";
+$NoUniqueScoreRanges = "There is no unique score range possibility.";
+$DidNotTakeTheExamAcronym = "The user did not take the exam.";
+$DidNotTakeTheExam = "The user did not take the exam.";
+$DeleteUser = "Delete user";
+$ResultDeleted = "Result deleted.";
+$ResultsDeleted = "Results deleted.";
+$OverWriteMax = "Overwrite the maximum.";
+$ImportOverWriteScore = "The import should overwrite the score.";
+$NoDecimals = "No decimals";
+$NegativeValue = "Negative value";
+$ToExportMustLockEvaluation = "To export, you must lock the evaluation.";
+$ShowLinks = "Show links";
+$TotalForThisCategory = "Total for this category.";
+$OpenDocument = "Open document";
+$LockEvaluation = "Lock evaluation";
+$UnLockEvaluation = "Unlock evaluation.";
+$TheEvaluationIsLocked = "The evaluation is locked.";
+$BackToEvaluation = "Back to evaluation.";
?>
\ No newline at end of file
diff --git a/main/lang/english/install.inc.php b/main/lang/english/install.inc.php
index 4da07dcad8..e99db89b39 100644
--- a/main/lang/english/install.inc.php
+++ b/main/lang/english/install.inc.php
@@ -119,4 +119,9 @@ $UpgradeFromDokeos18x = "Upgrade from Chamilo 1.8.x";
$SuggestionOnlyToEnableCSSUploadFeature = "Suggestion only if you want to enable the CSS upload feature";
$SuggestionOnlyToEnableSubLanguageFeature = "Suggestion only if you want to enable the sub-language feature";
$IfYouPlanToUpgradeFromOlderVersionYouMightWantToHaveAlookAtTheChangelog = "If you plan to upgrade from an older version of Chamilo, you might want to have a look at the changelog to know what's new and what has been changed";
+$WelcomeToTheDokeosInstaller = "Welcome to the Chamilo installer";
+$PHPVersionError = "Your PHP version does not match the requirements for this software. Please check you have the latest version, then try again.";
+$ExtensionSessionsNotAvailable = "Sessions extension not available";
+$ExtensionZlibNotAvailable = "Zlib extension not available";
+$ExtensionPCRENotAvailable = "PCRE extension not available";
?>
\ No newline at end of file
diff --git a/main/lang/english/learnpath.inc.php b/main/lang/english/learnpath.inc.php
index d0afb68b51..48e8d1cbb5 100644
--- a/main/lang/english/learnpath.inc.php
+++ b/main/lang/english/learnpath.inc.php
@@ -257,4 +257,6 @@ $EnableLPAutoLaunch = "Enable learning path auto-launch";
$DisableLPAutoLaunch = "Disable learning path auto-launch";
$ViewModeEmbedFrame = "Current view mode: external embed. Use only for embedding in external sites.";
$LPNotVisibleToStudent = "Students cannot see this learning path";
+$EditCurrentModule = "Edit current module";
+$SearchFeatureTerms = "Terms for the search feature";
?>
\ No newline at end of file
diff --git a/main/lang/english/reservation.inc.php b/main/lang/english/reservation.inc.php
old mode 100755
new mode 100644
index 49b63306a4..9b2b160a4b
--- a/main/lang/english/reservation.inc.php
+++ b/main/lang/english/reservation.inc.php
@@ -132,4 +132,49 @@ $Step1SelectResourceType = "Step 1: Select resource type";
$Step2SelectResource = "Step 2: select the resource";
$Step3SelectBookingPeriod = "Step 3: select the booking period";
$NoReservations = "No reservations";
+$ItemRightDeleted = "Item permissions removed.";
+$MItemRights = "Item rights";
+$MReservationRight = "Reservation right";
+$ItemRightEdited = "Item permissions updated.";
+$NoRights = "No rights";
+$MItemRights2 = "Item permissions";
+$MAddClassgroup = "Add class/group";
+$EditItemRight = "Edit item permissions";
+$DeleteItemRight = "Delete item permissions";
+$MBookingPeriodsRight = "Booking period permissions";
+$ViewItemRight = "View item permissions";
+$DeleteSelectedItemRights = "Delete selected item permissions";
+$SetEditRights = "Set edit permissions";
+$UnsetEditRights = "Remove edit permissions";
+$SetDeleteRights = "Assign delete permissions";
+$UnsetDeleteRights = "Remove delete permissions";
+$SetMresRights = "Set reservation permissions";
+$UnsetMresRights = "Remove reservation permissions";
+$SetViewRights = "Assign view permissions";
+$UnsetViewRights = "Remove viewing permissions";
+$SetAllRights = "Assign all permissions";
+$UnsetAllRights = "Remove all permissions";
+$ItemCourse = "Course item";
+$MItemRight = "Item permissions";
+$EditItem2 = "Edit item";
+$ItemManagerHeader = "Item manager";
+$LangClass = "Class";
+$MReservationPeriodsRight = "Reservation periods permissions";
+$AddNewItem = "Add a new item";
+$ItemName = "Item name";
+$ItemDescription = "Item description";
+$ItemExist = "The item exists";
+$EditItem = "Edit item";
+$ItemEdited = "Item updated.";
+$CategoryFilter = "Category filter";
+$ItemCreator = "Item creator";
+$DeleteSelectedItems = "Delete selected items";
+$BookingPeriodTimepickerLimitation = "Limitation on booking period timepicker";
+$Blackout = "Blackout";
+$EveryDay = "Every day";
+$EveryWeek = "Every week";
+$EveryMonth = "Every month";
+$ReservationForDenied = "Booking denied";
+$BookingPeriodTooSmall = "The booking period is too small.";
+$BookingPeriodTooBig = "Booking period too long.";
?>
\ No newline at end of file
diff --git a/main/lang/english/survey.inc.php b/main/lang/english/survey.inc.php
old mode 100755
new mode 100644
index d2916fdac1..40eca37951
--- a/main/lang/english/survey.inc.php
+++ b/main/lang/english/survey.inc.php
@@ -204,4 +204,12 @@ $PleaseFillSurvey = "Please fill survey";
$ReportingOverview = "Reporting overview";
$ThereAreNotQuestionsForthisSurvey = "There are not questions for this survey";
$Multipleresponse = "Multiple answer";
+$ErrorSurveyTypeUnknown = "Survey type unknown";
+$SurveyUndetermined = "Survey undefined";
+$QuestionComment = "Question comment";
+$UnknowQuestion = "Unknown question";
+$Lastname = "Lastname";
+$Firstname = "Firstname";
+$DeleteSurveyGroup = "Delete a survey group";
+$ErrorOccurred = "An error occurred.";
?>
\ No newline at end of file
diff --git a/main/lang/english/tracking.inc.php b/main/lang/english/tracking.inc.php
index 8319d8c7a0..9e75e5e6c3 100644
--- a/main/lang/english/tracking.inc.php
+++ b/main/lang/english/tracking.inc.php
@@ -296,4 +296,6 @@ $ExercisesInTimeProgressChart = "Progress of own exercises results over time, ag
$AverageIsCalculatedBasedInAllAttempts = "Average is calculated based on all test attempts";
$AverageIsCalculatedBasedInTheLatestAttempts = "Average is calculated based on the latest attempts";
$LatestAttemptAverageScore = "Latest attempt average score";
+$Untitled = "Untitled";
+$Quantity = "Quantity";
?>
\ No newline at end of file
diff --git a/main/lang/english/trad4all.inc.php b/main/lang/english/trad4all.inc.php
index d5f5f7ba8d..c61d75eb2f 100644
--- a/main/lang/english/trad4all.inc.php
+++ b/main/lang/english/trad4all.inc.php
@@ -177,7 +177,7 @@ $email = "e-mail";
$langCourseCodeAlreadyExists = "Sorry, but that training code already exists. Please choose another one.";
$Statistics = "Statistics";
$langGrouplist = "Groups list";
-$langPrevious = "previous";
+$langPrevious = "Previous";
$DestDirectoryDoesntExist = "The target folder does not exist";
$Courses = "Training";
$In = "in";
@@ -1045,4 +1045,65 @@ $GradebookAndAttendances = "Gradebook and attendances";
$SelectADateRange = "Select a date range";
$AllDone = "All done";
$AllNotDone = "All not done";
+$GroupUpdated = "Class updated.";
+$AuthSourceNotAvailable = "Fuente de autenticación no disponible.";
+$Responsable = "Responsible";
+$TheAttendanceSheetIsLocked = "The attendance sheet is locked.";
+$Presence = "Assistance";
+$ACourseCategoryWithThisNameAlreadyExists = "A course category with the same name already exists.";
+$OpenIDRedirect = "OpenID redirect";
+$Blogs = "Blogs";
+$Others = "Others";
+$BackToCourseDesriptionList = "Back to the course description";
+$Postpone = "Postpone";
+$NotHavePermission = "The user doesn't have permissions to do the requested operation.";
+$CourseCodeAlreadyExistExplained = "When a course code is duplicated, the database system detects a course code that already exists and prevents the creation of a duplicate. Please ensure no course code is duplicated.";
+$CantDeleteReadonlyFiles = "Cannot delete files that are configured in read-only mode.";
+$Uploaded = "Uploaded.";
+$Saved = "Saved.";
+$GotoCourse = "Go to the course";
+$EmailSentFromDokeos = "E-mail sent from the platform";
+$InfoAboutLastDoneAdvanceAndNextAdvanceNotDone = "Information about the last finished step and the next unfinished one.";
+$LatexCode = "LaTeX code";
+$LatexFormula = "LaTeX formula";
+$AreYouSureToLockTheAttendance = "Are you sure you want to lock the attendance?";
+$UnlockMessageInformation = "The attendance is not locked, which means your teacher is still able to modify it.";
+$LockAttendance = "Lock attendance";
+$AreYouSureToUnlockTheAttendance = "Are you sure you want to unlock the attendance?";
+$UnlockAttendance = "Unlock attendance";
+$LockedAttendance = "Locked attendance";
+$DecreaseFontSize = "Decrease the font size";
+$ResetFontSize = "Reset the font size";
+$IncreaseFontSize = "Increase the font size";
+$LoggedInAsX = "Logged in as %s";
+$AttachmentUpload = "attachment upload";
+$CourseAutoRegister = "Auto-registration course";
+$ThematicAdvanceInformation = "The thematic advance tool allows you to organize your training through time.";
+$RequestURIInfo = "The URL requested to get to this page, without the domain definition.";
+$DiskFreeSpace = "Free space on disk";
+$ProtectFolder = "Protected folder";
+$SomeHTMLNotAllowed = "Some HTML attributed are not allowed.";
+$MyOtherGroups = "My other classes";
+$XLSFileNotValid = "The provided XLS file is not valid.";
+$YouAreRegisterToSessionX = "You are registered to session: %s.";
+$NextBis = "Next";
+$Prev = "Prev";
+$Configuration = "Configuration";
+$ToGroup = "To social group";
+$XWroteY = "%s wrote:
%y";
+$BackToGroup = "Back to the group";
+$GoAttendance = "Go to attendances";
+$GoAssessments = "Go assessments";
+$UserRoles = "User roles";
+$GroupRoles = "Group roles";
+$StorePermissions = "Store permissions";
+$PendingInvitation = "Pending invitation";
+$MaximunFileSizeXMB = "Maximum file size: %sMB.";
+$MessageHasBeenSent = "Your message has been sent.";
+$Tags = "Tags";
+$ClassesUnSubscribed = "Classes unsubscribed.";
+$NotAddedToCourse = "Not added to course";
+$UsersNotRegistered = "Users who did not register.";
+$ClearFilterResults = "Clear filter results";
+$SelectFilter = "Select filter";
?>
\ No newline at end of file
diff --git a/main/lang/english/wiki.inc.php b/main/lang/english/wiki.inc.php
index 175d5d1796..aee52a1632 100644
--- a/main/lang/english/wiki.inc.php
+++ b/main/lang/english/wiki.inc.php
@@ -177,4 +177,18 @@ $PutATimeLimit = "Set a time limit";
$StandardTask = "Standard Task";
$ThePageHasBeenExportedToDocArea = "The page has been exported to the document tool";
$CreateAssignmentPage = "This will create a special wiki page in which the teacher can describe the task and which will be automatically linked to the wiki pages where students perform the task. Both the teacher's and the students' pages are created automatically. In these tasks, students can only edit and view theirs pages, but this can be changed easily if you need to.";
+$MostLinkedPages = "Pages most linked";
+$DeadEndPages = "Dead end pages";
+$MostNewPages = "Newest pages";
+$MostLongPages = "Longest pages";
+$NotAddedToCourse = "Not added to course";
+$UsersNotRegistered = "Users not registered";
+$ClearFilterResults = "Clear filter results";
+$SelectFilter = "Select filter";
+$HiddenPages = "Hidden pages";
+$MostDiscussPages = "Most discussed pages";
+$BestScoredPages = "Best scores pages";
+$MProgressPages = "Highest progress pages";
+$MostDiscussUsers = "Most discussed users";
+$RandomPage = "Random page";
?>
\ No newline at end of file
diff --git a/main/lang/english/work.inc.php b/main/lang/english/work.inc.php
index 6530ae2285..2f5d5ce009 100644
--- a/main/lang/english/work.inc.php
+++ b/main/lang/english/work.inc.php
@@ -91,4 +91,6 @@ $HomeworkCreated = "An assignment was created";
$HomeworkHasBeenCreatedForTheCourse = "An assignment was created for the course";
$PleaseCheckHomeworkPage = "Please check the assignments page.";
$IncludedInEvaluation = "Included in the evaluation";
+$DateExpiredNotBeLessDeadLine = "The expiration date cannot be smaller than the deadline.";
+$NotRevised = "Not reviewed";
?>
\ No newline at end of file