Tileset Cleanups

- Added Tileset Names to the Tileset Editor
- Added visual text display for tile type (B for Block, NA for Npc
Avoid)
- Changed MapEditor tileset selection to only go off of current tilesets
set in the Tileset Editor. Tilesets are now displayed by their set name
instead of file name/location.

- Fixed an issue with rendering text in the editor, can now render to
more then just one render window at a time
- Cleaned up rendering of editors so only the visible editor is rendered