Possibility to redraw element on elevation.

"Update wall" is now available for the elevation. 

This works the same way as the "Update wall" on the plan.

An example of this function could be if you have several walls with the same opening and the definition needs to be changed. When the definition is changed, the walls need to be selected, and "Update wall" needs to be run. This will update the openings in the walls.

What is especially good with this is that this can be run on unmarked walls as well.