Add map parser, fix several integration tests.

* Map parser is functional, and includes an integration test. Three test maps included.
* Added Tank.setLocalPlayer(true) to several integration tests to fix camera controllers not being set correctly.
* Changes sprite drawing behavior such that textures are now drawn from the bottom left. Also changes inCameraView bounds slightly to account for this drawing change.

Note that this is almost entirely Brandon's code. Woo, parser!