decouple controller name from its type
added ContentModelBase and ContentControllerBase
ContentModelBase refactoring
refactored ContentModelBase
Merge branch 'development' of https://github.com:boyko-karadzhov/Sitefinity/feather into DynamicContentWidget
integration test for the ContentModelBase
Merge branch 'DynamicContentWidget' into widget-templates-db
updated sitefinity references
Merge branch 'DynamicContentWidget' into widget-templates-db
#142466 Add to the widget templates list of dynamically created widgets