Updated message sent to managers when service is created
First Moodle 2.4 version (CHANGES.txt contains pending tasks)
Added $agora['server']['enviroment'] at the end of the cookie parameter to avoid problem moodle/moodle with production and learning environments 
- Deleted xtec2 theme icons
- Added access.php file to advices block
- Only enabled modules are showed 
- Reviewed COURSE_DISPLAY_MULTIPAGE behaviour 
- Reviewed db auth method integration with iw_index
Enabled browser check spelling and removed contextmenu plugin in tinymce
Updated JClic module to last version (added svg, updated some deprecated functions, implemented complete outline)
Added missing questionnaire module
Removed ko.png image as it was not and will not be used
Restored mod/forum/lib.php file to fix errors
Added check to avoid installation problems if not agora
Installed Wiris CAS i Editor (it uses some deprecated function)
Commented code to select iconset
Added code to avoid warning messages related with tiny_mce and Wiris
Changed id for usu1 for training environment if is an odd hour (to regenerate site without error messages)
Added try/catch to avoid questionnaire_survey->name ddldependencyerror
Changed id for usu1 for training environment if is an odd hour 
Changed id for usu1 for training environment if is an odd hour (to regenerate site without error messages)
Updated CHANGES to 12.12.28 version
Merge branch 'RB-moodle-2.4'
Removed field in users table for Moodle 2.4