Game now running TXA
GUI:

* Added textures for tiles
*Tile Textures added to texture manager
* Created vectors for tile placements
* Created GUI board and tiles
Merge branch 'master' of https://github.com/rasmusgreve/catan
GUI:

Major:
* Map now working
Minor:
* Added MapScreen, which shows the map
* GUIBoard removed, redelegated to MapScreen
* GUITile redesigned

GameState:
* Can now use GetRowLength to get length of specific row