load order changes

- fixed crashes occuring when Rise & Fall or the Macedonia-Persia pack were missing.
- minor text fix: the Trawler is now correctly referred to as such in all places.

- restored Liang to her original state, except for the last promotion. Amusement now takes the place of Parks & Recreation.
- If you also use City Lights, she will get the last promotion from there instead.
- Maritime Alliances no longer enable Fisheries (which are back at Liang) but instead a new improvement at level 2: the Trawler. You can only built one Trawler per city and it must be built on ocean, but it works like a Vampire Castle, i.e. it's quite powerful and will allow you to feed your capital with high seas fishing fleets placed all over the map.

changed load order to improve compatibility with UI mods

- fixed Civilopedia entry for alliances which now shows all alliance point sources as well as the bonuses for all new alliance types

- added compatibility with SM's Governors mod. Balance is sketchy, but no crashes will occur.