Eliminate GUI error messages

Default noDebugPopups to True and get rid of console logger. ** Note:
you will either have to set noDebugPopups to True in
~/.uvcdat/startup.xml or delete your ~/.uvcdat directory to see the
effects. **
Move PyQt signal creation to GUI

This must be merged at the same time as the
bugfix-579-fix-animate-signals on the uvcdat repo!
Merge remote-tracking branch 'origin/uvcdat-520-suppress-gui-errors' into uvcdat-master
Tom found the issue createInteractor needed 'True' arg instead of 'False'
Merge remote-tracking branch 'origin/uvcdat-589-vcs-plot-out-spreadsheet' into uvcdat-master
Merge branch 'uvcdat-579-fix-animate-signals' into uvcdat-master