Save & Load OpenIndy projects:
- comment & group
- functions
- observations in geometry lists
first try of server client communication
 signal-pattern(first concept) for sending the openindy-xml (Server/client)
bugfix font name
changed size of watchwindow, so all labels are displayed correctly now
added test for active feature, so it does not crash anymore when station or coord system is selected
changed data stream function for watch window