- Introduced Modelica.Icons.RotationalSensor via extends at all places where it was defined previously by a copy of this class.
- Changed the background color of Icons.RotationalSensor and Icons.TranslationalSensor from {192,192,192} to {245,245,245}, so from dark grey to very light grey.

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6705 7ce873d0-865f-4ce7-a662-4bb36ea78beb