64 Introduction of the measure line button
#65 Introduction of the route combo box
Merge branch 'feature/65_route_combo' into dev
 ##66 closed table windows must be removed from the viewMap. Otherwis, they will stay in the context
menu of the docking window. Additional, their view must be removed from the root window to avoid
problems with the saveLayout() method.
Merge branch 'bug/66_closed_windows_in_docking_window' into dev