Can start/stop backend

Increased max pitch/roll angle and maximum output from rate controllers. removed comment from log file being dumped.

Conflicts:
	website/content/pages/documents.md

Some rough updates to the model to reflect previously unmodeled behavior in the IMU and the alternative of using the camera system directly for pitch and roll.

Allowed values to be set before Gear switch. Re-enabled x/y controllers and made throttle manual for autonomous mode.

New Commands Structure

See merge request !3

Conflicts:
	.gitlab-ci.yml
	test-ci.sh

quad: add uart buffer tests to ci

See merge request !5

Revert "Revert "Merge branch 'master' of git.ece.iastate.edu:danc/MicroCART_17-18 into batch-setpid""

This reverts commit b9292f1c.

Yes, this is a revert-revert. Brendan broke all the things.

This reverts commit bcd4f7e7.

Yes, this is a revert-revert. We should suspend Brendan's git license pending
completion of a remedial course and 20 hours community service.

This reverts commit 6d4c0a2e

This reverts commit 293b9d07