Editor 2.0

[ChristianMayer]

The bring the editor to the next level a few points should be done:

• internal: Make code strict
• internal: Separate view and logic, e.g. use a tree widget
• visible: Allow drag&drop to move elements around (instead of the current sort)
• visible: make it more mobile device friendly (-> no context menu to create new elements)
• visible: Link editor with preview to that the use immediately sees where the selected element is in the visu
• visible: replace all alert boxes with less disturbing/distracting feedback
• visible: Allow language switch and implement mulitlanguage

[peuter]

I guess this is done with the new xml editor