Added TemplateContentView

Fixed a bug in template selector that could lead to all instantiated
template selectors sharing a common collection.
Added ViewFor(T item) to TemplateSelector.
Added TemplateContentView a content view with a templateselector.
(Perfect for situations where you want to display different data types
in a single area based on  user selections (ie:  User choosable
widgets.).
Add an Exceptions Folder.
Added InvalidBindableObjectException.
Added NoDataTemplateMatchException.