0.15.10.1 - More Fixes, Major Perf Improvement for High Battle Levels

Fix regression where land resource had become invisible in parts of the UI.
Dramatically improve performance of searching for ideal farm level when you are at a high level. The old logic would check many many levels, the new logic is much more selective about which levels it simulates, and it should have the same result.
Fix another bug where a battle-related banner can get stuck permanently on screen.
Improve CPU performance of more complex targeting logic that was added in recent patch.
Fix market building to only provide 1 bonus trade, not 2 (to match its storage).
Fix accuracy issue with the way median is calculated (this should make push % and farm numbers more consistent).