* Fixed virtual circles grid point generation
* Fixed error that occurred before the first camera info message was received
* Beacon debug image is published if there are subscribers
Merge remote-tracking branch 'github/beacon_finder' into level1_alpha
Added new startup sounds, unique for each computer.
Limit low batt. volt. warnings to 1 every 15 secs.
Merge remote-tracking branch 'github/master' into level1_alpha
Real size check for detected color blobs

This may get changed to measuring along the bottom for projective
geometry reasons
Merge branch 'color_name_blob' into level1_alpha
Remove anonymous attribute on sample_detection nodes
Tuned beacon finder blob detection
Merge remote-tracking branch 'robot/beacon_finder' into level1_alpha
Wait for roscore to start before launching
Correct slope sign in ray_to_point
Add blue to possible colors
Pursuit fixes
Use transformPoint to move filter input to proper frame
Use frame from current goal for transforming sample point
Correct frame of filter output point
Set point to None when unsupported
Debugging in filter
Correct unsupporting behavior

and only publish update values