gui: bug fix
gui: overlay test case fix
gui: added Dichotomy overlay
Merge branch 'dichotomy'
gui lens alignment: don't use stream controller, and create streams manually

The stream controller handles lots of things... so many of which we don't need.
Just create the streams and the stream entries manually.

The only small annoyance is that there is no more scheduler, but it's easy to do manually too.
Merge branch 'master' of vpn.delmic.com:odemis