#694 Image gallery refactoring: using media folders instead of albums
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev

Conflicts:
	Modules/BetterCms.Module.ImagesGallery/Command/GetAlbum/GetAlbumCommand.cs
	Modules/BetterCms.Module.ImagesGallery/Command/GetAlbumForEdit/GetAlbumForEditCommand.cs