Integrate install.inc.php to trad4all.inc.php - refs #4467

main/install/index.php

@@ -67,10 +67,8 @@ if (!array_key_exists($install_language, get_language_folder_list())) {
 
 // Loading language files.
 require api_get_path(SYS_LANG_PATH).'english/trad4all.inc.php';
-require api_get_path(SYS_LANG_PATH).'english/install.inc.php';
 if ($install_language != 'english') {
     include_once api_get_path(SYS_LANG_PATH).$install_language.'/trad4all.inc.php';
-    include_once api_get_path(SYS_LANG_PATH).$install_language.'/install.inc.php';
 }
 
 // These global variables must be set for proper working of the function get_lang(...) during the installation.

main/install/update-files-1.9.0-1.10.0.inc.php

@@ -110,6 +110,7 @@ if (defined('SYSTEM_INSTALLATION')) {
         'help',
         'import',
         'index',
+        'install',
         'learnpath',
         'link',
         'md_document',