Coding style fix
Added support for string format in `_date()`
Code cleaning
Added `getList` method for file service, supporting filter callback
Code cleaning
Fix for typos introduced in refactoring
Fix duplicate  description when form element type is description
Load admin langaue file, for fix register form translation
Merge pull request #1083 from voltan/develop

Fix duplicate description on form and Load admin langaue file, for fix register form translation
Added jQuery `Magnific Popup` extension