Stepan Salenikovich authored Dec 13, 2015 and Guillaume Roguez committed Dec 16, 2015

The fullscreen video is now created by making the main window
fullscreen and hiding the left panel. This is done instead of
creating a 2nd GtkWindow and placing a new VideoWidget inside
of it.

This allows to easily have all the overlays and controls in
the video in the fullscreen mode.

This is also potentially a way to prevent a clutter related
crash.

Tuleap: #161
Change-Id: Iac2792b22ede4aaaff98a76d3de34189bcb4150c