tweaked battery monitor, now working

also added ability to set threshold as a command line argument
Added video splitter utility to get rid of unecessary footage.
Merge branch 'dev-integration' of https://github.com/PalouseRobosub/robosub into dev-integration
added configurable delay to battery monitor, made own grapevine key
added filtering for start switch

sanitizer now cuts out button bounce on the start switch
added battery monitor to Dr. Frankenstein
started on buoys task ai module.
Merge branch 'user/irwinj2' into dev-integration

added battery monitor and filtering for the start switch
added battery monitor module, tweaked sensor debug

battery monitor warns all users when the battery is low, the sensor debug now prints to the screen in addition to writing to a file