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

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

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Shuffled around #include dependencies to allow the control algorithm diagram to be generated without copying code out of control_algorithm.c

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 293b9d07

- added some comments in commands.c/h about usage of the file
- added a MAX_CONTROLLER_ID and MAX_CONTROL_VAL_ID to the enums in commands.h
- implemented cb_set_control in callbacks.c to work with the new parameter struct
- changes the parameter_struct to now contain an array of pid_controllers instead of a bunch of random PID_t members
- the new parameter_struct array can now be accessed by controller ID as defined in commands.h

Integrated changes from comm_dev (interrupt-driven UART) and updated code to work well with the new style. Compiles, but have not tested running yet.

Autonomous mode is throttle-only. Fixed bug in stringBuilder that would fail to resize byte data. Packets that don't have a matching checksum are thrown away now.