Adds referee screen and deities.

Updates bestiary with links to nonhuman racial modifiers.

src/pages/bestiary/pirate.md

@@ -33,6 +33,7 @@ A sailor skilled in theft and piracy, be it on the seas, in the air, or on the a
 -   **Ships and crew** - 1d3 caravels or 1d3 small warships (1d5+3 × 10 pirates each).
 -   **Treacherous** - Prone to betrayal and infighting, especially when profitable.
 -   **Treasure** - Either divided between vessels, or buried somewhere (and only the map is carried).
+-   [**Non-human Modifiers**](./nonhuman-modifiers.html): Non-human pirates may have additional abilities or modified statistics.
 
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