Religion fixes:
- Great Prophets spawn again
- Civilian units can get promotions upon being built (Great Mosque of Djenne)
- Missionaries consumed upon expending all usages

By SomeTroglodyte:
- Fade in/out for City Ambiance Sounds
- Fix Tutorial loader for mods on Android
- Fix ai tile purchase

By tuvus:
- Defensive pact button shows on both sides when a DoF is about to end
- Defensive pact functionality is now canceled with otherCiv before calling in defensive pact allies