TSAC-3521

Export EliPlan file (68): The Tag for lifters setting has been improved and now also rebars can be specified as lifters using class or name. Now Tag for lifters also has option to specify how the lifters geometry should be plotted - as outline or as center point. It is also possible to specify plotting of additional reinforcement as bounding box or as lines using the setting Plot additional reinforcement or Plot cutout/embed as lines.