Remove use of undefined configuration param code_append in default configuration file

main/install/configuration.dist.php

@@ -58,13 +58,13 @@ $_configuration['url_append'] = '{URL_APPEND_PATH}';
 // CAS IMPLEMENTATION
 // -> Go to your portal Chamilo > Administration > CAS to activate CAS
 // You can leave these lines uncommented even if you don't use CAS authentification
-//$extAuthSource["cas"]["login"] = $_configuration['root_sys'].$_configuration['code_append']."auth/cas/login.php";
-//$extAuthSource["cas"]["newUser"] = $_configuration['root_sys'].$_configuration['code_append']."auth/cas/newUser.php";
+//$extAuthSource["cas"]["login"] = $_configuration['root_sys']."main/auth/cas/login.php";
+//$extAuthSource["cas"]["newUser"] = $_configuration['root_sys']."main/auth/cas/newUser.php";
 
 // NEW LDAP IMPLEMENTATION BASED ON external_login info
 // -> Uncomment the two lines bellow to activate LDAP AND edit main/auth/external_login/ldap.conf.php for configuration
-// $extAuthSource["extldap"]["login"] = $_configuration['root_sys'].$_configuration['code_append']."auth/external_login/login.ldap.php";
-// $extAuthSource["extldap"]["newUser"] = $_configuration['root_sys'].$_configuration['code_append']."auth/external_login/newUser.ldap.php";
+// $extAuthSource["extldap"]["login"] = $_configuration['root_sys']."main/auth/external_login/login.ldap.php";
+// $extAuthSource["extldap"]["newUser"] = $_configuration['root_sys']."main/auth/external_login/newUser.ldap.php";
 //
 // FACEBOOK IMPLEMENTATION BASED ON external_login info
 // -> Uncomment the line bellow to activate Facebook Auth AND edit main/auth/external_login/ldap.conf.php for configuration
@@ -72,8 +72,8 @@ $_configuration['url_append'] = '{URL_APPEND_PATH}';
 //
 // OTHER EXTERNAL LOGIN INFORMATION
 // To fetch external login information, uncomment those 2 lines and modify  files auth/external_login/newUser.php and auth/external_login/updateUser.php files
-// $extAuthSource["external_login"]["newUser"] = $_configuration['root_sys'].$_configuration['code_append']."auth/external_login/newUser.php";
-// $extAuthSource["external_login"]["updateUser"] = $_configuration['root_sys'].$_configuration['code_append']."auth/external_login/updateUser.php";
+// $extAuthSource["external_login"]["newUser"] = $_configuration['root_sys']."main/auth/external_login/newUser.php";
+// $extAuthSource["external_login"]["updateUser"] = $_configuration['root_sys']."main/auth/external_login/updateUser.php";
 
 /**
  *