fixes and workarounds


gameplay fixes
- Himiko, High Shaman: fix building tags needed for leader ability
- Guildhall building: add missing Diplomacy tag
- Inn building: add missing Happiness tag
- Opera House building: add missing Diplomacy tag
- Ottru unique unit: add missing Naval unit class
- Shawnee civilization: fix unlock rewards
user interface fixes
- lens manager: fix UI scaling for resource class & treasure icons
- yields layer: fix spacing and UI scaling for yield icons