Added check for autodetect plugins existence.
* pitivi/bin.py:
* pitivi/discoverer.py:
* pitivi/effects.py:
* pitivi/pitivi.py:
* pitivi/playground.py:
* pitivi/project.py:
* pitivi/settings.py:
* pitivi/sourcelist.py:
* pitivi/ui/mainwindow.py:
* pitivi/ui/viewer.py:
Better debug levels
* pitivi/timeline.py:
gnlfilesource is only used by TimelineFileSource
Added more signals to TimelineComposition
* pitivi/ui/Makefile.am:
* pitivi/ui/complexinterface.py:
* pitivi/ui/complexsource.py:
* pitivi/ui/ruler.py:
Added complexinterface.py, complexsource.py and ruler.py
* pitivi/ui/complexlayer.py:
* pitivi/ui/complexstack.py:
* pitivi/ui/complextimeline.py:
Better designed ComplexTimeline, layer and tracks
* pitivi/ui/timeline.py:
CTRL + scroll does vertical scrolling in complex timeline.
* pitivi/ui/timelineobjects.py:
ooops, don't need pango anymore


git-svn-id: svn+ssh://svn.gnome.org/svn/pitivi/trunk@686 d3729300-e425-0410-8a4c-d956edccc248