Updated probability-syndrome.rb

* Probability commands now correctly process reaction ID, worker ID,
  and location meta-arguments
* Debug mode correctly disabled
Update Dfhack Guide.html

Changed dfhack guide.html to match dfhack.init for stocks show and zone set keybindings.

~There Is No Vic
New contributor: There Is No Vic #dev
Added missing 'S' to MATERIAL(S)_(DEFAULT|WEAK|NORMAL|STRONG)

See http://www.bay12forums.com/smf/index.php?topic=134919.msg4884228#msg4884228
maint-bin: sync.pl: Only push master and unified to github by default.
Merge remote-tracking branch 'upstream/master'