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
Merge branch 'winter' into develop