[testing] Restore test_movement and make it 'works'

Default ControlType does not work for human, so force the use of
ControlType = Position
[builder] fullscren: add desktop arg

Use the current desktop resolution in fullscreen mode.
Following franco.carbognani <franco.carbognani@marssociety.it> mail on
morse-dev and Arnaud comment.
(on my laptop, this does not affect `morse run` behavior, but apparently
usefull when using blenderplayer)