Merge pull request #2038 from HabitRPG/sabe/tweak

Add mention of Health refill to Fortify
fix #2040 - $rootScope.moment = window.moment. Fixes to applying spell
Update CONTRIBUTING.md

I added a link to the FAQ, because some issues are addressed there.
Update CONTRIBUTING.md

Moved the FAQ suggestion to a subsection of Reporting Bugs.
show stealth buff in stats
classes: add streaks buff for mages
fix #2061 "on the party" => "for the party"
temporarily disable stats in party-member modals
fix #2058 double-task deletion
winter event! npcs, snowball=>snowman, new hairs/beards. Fixes to beard/chin overlays. move Fortify Service => "Fortify Potion" Special. @sabrecat let me know what you think: http://gyazo.com/55cd424f104b8f3acb557b99d918cb4b). Sorry for mixing concerns in this commit, some rebase difficulties
winter: bailey notif, show winter colors as limited-edition
winter: add salt spell to remove snowball buff
save user on spell-cast (so we don't get second mp loss notif)
update bailey per @lemoness , update limited-edition end date
winter: add snowball achievement in model
#2012 preventDefault as well as stopPropagation. This will preven the
 checkbox from getting checked, which may not be desirable, but at least
 prevents the bug for now
Merge branch 'winter' into develop
winter: make bailey head more visible with holiday gear (remember to
revert this after 1/31!)
add notif re: math updates for classes (@wc8)
Add wiki glossary to tavern

My local repo is behind and ahead so I'm submitting from GitHub. Not sure how to fix, so if there a bunch of old commits, please ignore. This is the only active one I've got going.