Small balancing update.

-added some random tips 'n tricks (existing texts for now)
-move crab +naval harbour to later cuz too hard to beat and blocks other encounters
-removed the continuesly VO about mawspring placement after you get the wonder
-increased population of faction citadels and outposts (to give a bit of a jumpstart to unlock new content)
-lowered the requirements for the lower tier captains and commanders
-removed some of the wayward stars around the lower horizon of the sky