Linker improvements

- The Agricola Dictionary is sorted by priority, so that long tokens
aren’t overwritten by shorter ones that are proper subsets of them.
- Added a marking mechanism in the link setup so just added links
aren’t touched, which allows the priority dictionary to work.
- Tokens containing apostrophes now work properly.  It seems like
Jekyll was turning them into ticks for better typography.
Move "Baking or Ranching" section, add section about baking cues
Add "Player Interaction" section, with comments about Denial and Starting Player