SC: first major refactor of editable methods to standardise the methods across razor, mvc and webforms
SC: refactor of editable methods without the need for the model to be passed in.
SC: added IsInEditingMode to all classes
added RenderLink and BeginRenderLink support
SC: removed the UiUtilities class
SC: marked old RenderLink and RenderImage methods as obsolete
sc: fixes after testing in Sublayout and Razor project
SC: fixes for GlassHtml in MVC
Merge branch 'feature/EditableImprovements' into develop
SC: attribute output for images updated