Less urgent fixes for various bugs reported by QA/found in testing:
* Fix for chinampa-reclamation meter on Cuauhmixtitlan mission
* Fix for herd-allocation on maps with obstructed terrain
* Fixes to hunting and sawyer-claim behaviours
* Assorted fixes for UI-glitches in campaign, advisors, event-messages, etc.
* Other minor tweaks and fixes
Once again, thanks for your patience