Added unimplemented Network integration tests
Continued net integration implementation
Merge pull request #199 from BU-CS673/production

Production -> Canfield
Small network test updates
Many network system changes
Commented out network code...
Continued working on network system
Significant network system implementation

- Client is largely implemented
- Changes to the Network interface
Completed network impl; Testing needed
Network system fixes
Commands now travel through the network
Fixed socket header problems
Added MoveEntity net command
Network tanks no longer use local controls
Tank move commands now sent across network
CreateTank command now sets tank.isLocal == false
Fixed bullet distance problem

Also changed British English travelled to American English traveled.
Slightly increased tank deceleration speed
Bullets are now sent across the network
Revert "Sprites now draw "from the center""

This reverts commit 1c7bbe793991f2e2e1307dec8d814d63e7d0d156.