Rotate entire map.

Add a button to rotate the entire map 90 degrees. This could be in the map generator within the terrain tools.

When exporting to print and delivery, the current export requires that the map be built in landscape format. It would be nice to have a feature that auto-rotated the map to allow for export to Kraken Games in landscape.

I can currently build a 27x42 map but it will not accept it, in spite of the fact that a 42x27 map would be accepted.

This seems like an easy fix that would increase the usability of this feature.