1. Move NGP slave javascript out of backwardsCompatibility.js into newGamePlus.js

2. Move NGP PC prep out of storyInit.tw into the newGamePlus closure
3. Move ngUpdateGenePool and ngUpdateMissingTable out from global scope into the newGamePlus closure
4. Set the NGP offset constant exactly once, in the newGamePlus closure
5. Fix some NGP bugs
6. Refactor family controller reset into resetFamilyCounters() in extendedFamilyModeJS.js, remove familyPanic.tw, and replace all other instances of family controller reset with a call to resetFamilyCounters().
7. Refactor revivalist nationality determination into a new getRevivalistNationality() function and call it everywhere we try to determine the revivalist nationality.