Revert "Added fractional mouse movement to trackers"

This reverts commit a26c51e20012cbd9b12cd02420b9bd599c416e2d.

Tried to cfherry pick the tracker fix above. Ended up with changes and log correct in local but changes not pushed to remote. Reverting and fixing manually.
Tracker changes to fix deadzone, manual copy from NikHs earlier commit due to problems with cherry pick
Refactoring and cleanup of trackers. Closes #36
Proper handling of full 360 rather than the 359 to 0 hack that was limiting rotation speed. Fixes #39
Also fixes deadzone if moving head very slowly. This was fixed in Vireio long ago but I only just got around to brining the fix in.
Subtracted a negative where it should have been added
Debug message for yaw/pitch/roll and playing with head on a stick model in B2
Unneeded new/delete removed.