#736 Fixed insertion of folder as custom option; removed folder selection;
#727: PublishDraftContent fixed.
#739 Images gallery: only image folders are returned; doesn't include inactive image versions to counts;
#730: preview image for gallery widgets added.
Merge branch 'dev' of ssh://github.com/devbridge/BetterCMS into dev
#732 Fixed ko.grid: when canceling edit mode after failed save
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#740 Fixed previewing of contents, when security is off
#739 Changed names of gallery widgets
#739 Albums: excluding deleted folders;
#739 Albums: excluding deleted folders; exluding temporary and uploading files;
#742: check for undefined accessList added.
#740: access right checking added to preview.
#739: album command updated.
#741 By default search box is focused in knockout grids
Merge branch 'dev' into dev-contents-drag-and-drop