Merge pull request #19 from Pie-Studios/ui-rendering

Basic(very non-interactive) UI objects
Started on building a QuadTree for Collisions
Testing some stuff to serialize a QuadTree
Different path on collisions
Added Grid collection type
Changed Screen<->Pixel and Enabled to Visible
Began building worlds
World Stuff
Set EventQueue threads to background

Makes sure they quit with main form
Renamed Event
Moved ScreenToPixel to UI
Render grid etc etc
Renamed namespace

All files have been changed in some way
Renamed project folders
Max and Min and stuff
Big I
Working on Colliders, unfinished code
Entities and Collisions

Compile them to the world .xnb file instead of their own files.
They are static but can be hidden from serverside by switching the model
id to <empty>
lots

added UIWindow importer
added Collisions
Rewrote all rendering
Testing some fonts etc, non-working code