Merge pull request #185 from gillham/master

Add devices profiles for the Arduino Generic Logic Analyzer sketch.
Issue #170: do not overwrite labels through annotations.
Show group labels:

- to make it visually clearer what belongs to what group;
- to give a visual clue where one can open the context menu
  for editing group properties.
Added property for element group label color.
Removed Maven warning.
Fixed compiler warnings.
Bumped version to RC1.
Increase portdelay so the Arduino Uno R3 works.

The Arduino Uno R3 requires a longer device.open.portdelay compared to
older Arduino boards.
This fixes the reported issue of device timeouts.  Tested on Mac OSX
and Windows and the R3 works fine with this delay.  Also tested against
original Uno, Duemilenove, Seeeduino and they still work.