Allow manual adjust of escalation die and terrain pane positions

[MisterCheesy]

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My mod loadout forces the position of the two panes to be in not-so-great positons

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Ideally id love to be able to drag and drop both of them independently and have the new positions be remembered across sessions, but a simple choose corner and x/y offset for each could work in a pinch too

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N/a

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Great mod!

[LegoFed3]

This isn't done per se but will need a second look in v13 after all the layout changes.

@ben how hard would it be to make the ED div movable, even without saving its position on a per client basis (that would be the complete fix, but being able to move them out of the way could be a start).