constructor GSort modified, first part of actions drawn in PHScene
Draw first part of actions taking in account the ellipse of the process
Merge pull request #7 from ThomasC44/draw-actions

Draw actions
Empty methods created in PHScene and GAction to update position of the graphical action
Merge pull request #9 from ThomasC44/draw-actions

Empty methods created in PHScene and GAction to update actions in the scene
Modifications of size of GProcess and GSort
Merge pull request #10 from ThomasC44/draw-actions

Modifications of size of GProcess and GSort
Update&Display actions when the user is moving a sort