Strategic view

[Garanas]

Experiments with an alternative to the usual dual view. Functionality that is still required:

• [ ] Being able to choose the left or right side
• [ ] Being able to track units in the separate views
• [ ] Being able to swap the main view with a side view (and back)
• [ ] Being able to bind a camera position to a side view
• [ ] Being able to lock a side view (camera wise)
• [ ] Make it look better by adding some black border between the views

And preferably, but proven difficult:

• [ ] The UI should only be in the main view, and not overlap with the side views