refactoring contentblock designer

and shared content selector
refactored share/unshare dialogs
Merge branch 'master' of https://github.com:Boyko-Karadzhov/Sitefinity/feather-widgets into designerRefactoring
localized strings in the designer

and share/unshare dialogs
fixed designer cancelling issue
ContentBlock designer views by convention
Merge branch 'master' of https://github.com:Boyko-Karadzhov/Sitefinity/feather-widgets into designerRefactoring
resolving controllers by convention
removed unneeded resource