Added basic GUI, simplified code structure, getting ready to read in files.
Obstacle grabbing, layering contemplation…

* Bots can now grab and drag boxes if adjacent and pressing E

* Remove depth adjustment code, going to require different solution else manage all depth myself. First solution possibility: move obstacle graphics to bottom of image.
Editor beginnings!
Editor works a bit more

* Camera focuses correctly on tiles

* Tiles are rendered with correct graphics for the tile type

* Mouseclick sets obstacle and tile settings for the EditorTile object

Missing:

* No obstacle render yet

* No XML input/output

* No connections or locks, but that needs a redesign anyway
XML Save/Load Functional + Toggle Between Game & Editor

ToDo:

* Still missing obstacle display and connections at all

* Need to load level in game now

* Require player spawn to save

* Enforce tileType for obsTyle
We don't need to include builds...
Merge pull request #3 from Silarn/master

3/7 Update