Fix absolute layout size
Merge branch 'master' of github.com:Heigvd/Wegas

# By Anthony Geiser (1) and Francois-Xavier Aeberhard (1)
# Via Francois-Xavier Aeberhard (2) and Anthony Geiser (1)
* 'master' of github.com:Heigvd/Wegas:
  Prog game - Refactor canvas display widget
  StateMachineViewer: * Optimization (anonymous function) * Remove save button * Click on state to edit