[EditSuite] Fixed #337
[EditSuite] Fixed typo
[LanguageSystem] Implemented new language system in Content class
[General] Fixed typo
[General] Removed obsolete files
[General] Fixed icon sizes
[General] Removed obsolete header ACP template
[General] Improved JSDoc comments
[General] Fixed permissions
[General] Changed for Redactor
[General] Fixed createVersion and update
[General] Fixed reading I18n values
[General] Fixed coding style
[General] Fixed coding style
[EditSuite] Fixed display of existing entries for title, description and text
[LanguageSystem] Convert languageEntryID to integer
[LanguageSystem] Convert null from database to 0