Removed compass declination, obstacles, bug fixes

Compass declination is all commented out. It sucked anyway.
Added obstacles to the A* map
Fixed null error in A*
Merge branch 'master' of https://github.com/mastergberry/SmartRover

Conflicts:
	app/src/main/java/edu/ucsb/cs/capstone/letmypeoplecode/smartrover/MainActivity.java

Nigga fuck yo spacing.