gitignore: Ignore save files in git
Orcish dry-dock: Allow 'collect rusty iron weapons' reaction.

Previously we could collect bronze, silver, copper, and iron weapons,
but the most commonly obtained junk (rusty iron) was not available
as a custom reaction. Now it is.
Merge branch 'master' into unified

* master:
  Orcish dry-dock: Allow 'collect rusty iron weapons' reaction.
  gitignore: Ignore save files in git