Move slave trade presets from widgets into App.Data, and get rid of the awful widget-iterating mess in customizeSlaveTrade.tw.

1. Move all starting girl relative generation into commitStartingGirl.tw and remove all the global flags which used to control it between the two passages.
2. Rework starting girl relative generation to use generateRelatedSlave.
3. Allow starting girl relative generation in Extended Family Mode, with a full suite of nuclear relatives (Mother, Father, Twin, Older/Younger Sister/Brother, Son and Daughter), appropriately gated by age and $seeDicks.

giant sparse arrays serialize ludicrously inefficiently.  slaveIndices is supposed to be a keyed object.

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.

Make "F" into a global variable ("V.lastWeeksGatheredTotals") in preperation for facility sheets, and fix some wrong categories for servants