Add Initial PID-controller for following a line
Add TASK's for PID and colordetection
Merge branch 'master' into Line_follower
Merge branch 'master' into Line_follower

Conflicts:
	main.c
Corrections so that code complies with nxtOSEK 2.18
Change the boot program "Color measurement" to "colorsensor test" and include test for measuring light
The boot programs menu will now start at first boot program instead of exit mode
Add support for registering colors and changing sensor.. NOT WORKING OPTIMALLY
Add new boot program to test sonar sensors
Remove old distance measurement boot program since it is redundant
Fix bug with sensors mode switch
Add functionality to disable linefollowing tasks
Change cleaing to cleaning in clean build script
Merge branch 'master' of github.com:Vandborg/SW505E14-Software
Merge branch 'master' into Line_follower

Conflicts:
	boot_programs/color_calibration/color_calibration.c
	boot_programs/color_measurement/color_measurement.c
	main.c
Merge branch 'master' into Line_follower
Fix main so that colorsensors will be set to the correct mode if line following is activated
Move color_sensor and light_sensor variables to above the task they are first used
Move tasks involved in line following to own file in utility movement
Add comments to utility_line_follow.h