Added SafeContentRender class that is the base for render safe content for the client side.
Renders Titles, Meta tags, Tree nodes and Edit mode rendering using this class now.
Forgot a file. Remove AllowHtml usage
Merge remote-tracking branch 'source/master'

Conflicts:
	src/Framework/N2/Details/WithEditableTitleAttribute.cs
Merge pull request #378 from jsassner/master

Added SafeContentRender class that is the base for render safe content f...