pull changes from master to dev on 2014-12-07

This update brings these approved pulls to the dev branch:
* User-visible:
    * #1443: add button art for several more fanatics
    * #1451: fix bug in which game continuation messages are lost when continuation game is random
    * #1456: if the game erroneously gets into `ADJUST_FIRE_DICE`, report an internal error, don't just sit there
    * #1457: fix to display zero-sided swing dice correctly in the game and in the log
* Not user-visible:
    * #1455: removed a print statement causing unnecessarily large output for some test failures

Database updates: none

Once this pull is merged, i will load the changes on dev.buttonweavers.com as part of #217.