* pitivi/effects.py:
* pitivi/objectfactory.py:
* pitivi/pitivi.py:
* pitivi/playground.py:
* pitivi/project.py:
* pitivi/timeline.py:
* pitivi/ui/complexlayer.py:
* pitivi/ui/complexsource.py:
* pitivi/ui/complextimeline.py:
* pitivi/ui/exportsettingswidget.py:
* pitivi/ui/gstwidget.py:
* pitivi/ui/mainwindow.py:
* pitivi/ui/projectsettings.py:
* pitivi/ui/ruler.py:
* pitivi/ui/sourcefactories.py:
* pitivi/ui/timelineobjects.py:
Cleanup and fixes thanks to pychecker.
Moved Christian's patch for appicon into each of the windows and dialog
boxes classes.


git-svn-id: svn+ssh://svn.gnome.org/svn/pitivi/trunk@721 d3729300-e425-0410-8a4c-d956edccc248