Moved gst_init() in main application and added gst_deinit().
Reenabled seeking when clip is over (loop) without having to reload the movie.
Refactor the pipeline + fix merge shmsrc feature
Merge branch 'develop' of github.com:mapmapteam/mapmap into develop
Merge branch 'develop' of github.com:mapmapteam/mapmap into develop

Conflicts:
	MainWindow.cpp
	MediaImpl.cpp
Integrated latest changes from Dame wrt item selections (paint and mapping lists).
Fixed bug #33: The --fullscreen option doesn't work.
use startFullScreen to fix compilation failure (introduced for bug #33)
Fix some issues with shmsrc pipeline and video dimensions (bug #29)

Shmsrc seems to work with a gstreamer 1.4 build, but not with distro gstreamer
(segfault due to missing fix https://bugzilla.gnome.org/show_bug.cgi?id=731093)
Reader / writer of live source need to be using same gstreamer build, otherwise
some pipeline problems appear in deserializing and caps detection.

Playback of the first shape mapped with the live source doesn't seem to work (?),
so this bug stiil needs investigation.
Fixed bug #33: The --fullscreen option doesn't work.
Add Dame Diongue to the list of developers
Merge branch 'develop' of github.com:mapmapteam/mapmap into develop
MediaImpl: move buffer processing in gstNewSampleCallback (bug #30)

Buffer releasing should happen independently of videoPull() getting called for
texture updates. We move all processing and buffer unreferencing in
gstNewSampleCallback. This way we don't run out of memory in case of video
pipeline playing without texture/mappings.
Removed commandline options for Qt < 5.0.0 (because it is not supported then).
Unref more leaking samples in MediaImpl.cpp (queues are kept at a limited size).
Free memory from call to gst_structure_to_string().
Added application information.
Merge branch 'develop' of github.com:mapmapteam/mapmap into develop
Fix a memory leak with the shmsrc poller
Add documentation strings in MediaImpl.h