Bounds are now correctly displayed with horizontal sorts.
Prevented drag'n'drop with right click, cleared a unused method of PHScene.
Merge pull request #40 from AurelienHP/master

Installing millisecond-sensitive timer
Merge pull request #39 from clefeuvre/master

Bounds are now correctly displayed with horizontal sorts.
Affichage
OpeningTime now replaces RenderingTime in order to show real opening time instead of rendering time