timeout in worker thread
implemented timeout for method AutoDetectTools,

todo:
  - timeout for other methods
  - reactivate GUI
  - static variable for timeout time
started implementation, not working yet.
Implemented persistence of UI settings of the view itself. Persistence of some widgets is still missing
small fix
Merge branch 'bug-17713-TrackingFreeze' into personal/franza/US-Navigation-Experiments-May2014
Merge branch 'bug-17923-USPluginPersistence' into personal/franza/US-Navigation-Experiments-May2014
made method GetUSImageSource public in all US device classes, added documentation
now taking the image directly from the image source which avoids copying the image twice
now freezing is possible again (with the new implementation)
added feature to stop update stream to save runtime if the stream is updated somewhere else
added labels to the sliders
Started implementing CSV-File Reader
Finished coding the csv-reader. Not been tested
Added a csv-reader-writer test and did some changes in igt-test
Some other smal changes were done aswell
"Doku" added
minimal changes made
writer seems to stop working
added new icons of design project to US module (special thanks to Carolin Feldmann)
fixed a bug: Polaris is now always selected by default at start
Filename is now trimmed if it's to long to be visualized