LogicExample 3.1.1 doesn't have the grid and ruler in the contextmenu. In
the workbench menu the actions are working for me. I think the problem
with grayed out actions is that they don't recognize that the editor is
activated. Adding RetargetActions in the method buildActions() in the
ActionbarContributor is also working for me.
I hope that someone from the gef developing team can help us with this.