Netbiscuits .NET Controls

Improvements for IntelliSense, Property Editor and Object Browser:
- Hide all unneeded inherited members.
- Removed design time classes from public interface.
- Moved member types from root to "Elements" namespace.
- Added comments to all classes and public members.
New controls:
- Container control to allow grouping and two column layout.
- Controls to create External, Forward and Paging declarations.