Fixed bugs

• Changing flow formulas with large values is now much faster.
• The titles of the elements in the grid no longer jump when the height of the element is changed.
• The sign of the flow branches no longer changes when the value of the flow is adjusted after the flow branch factor has been changed.
• Actions that were inserted via copy&paste and contain a resource consumption that is not available in the new model will be deleted.

Improvements

• The element toolbar is now hidden while the associated element is moved.
• When simulation info popups appear, their OK button is focused.