Add upvote hook

adhere to similar project style
match `object.action` nomenclature
dont send typing notif on each keyup
Merge branch 'feature/favourite-hook' of github.com:GAWMiners/NodeBB into GAWMiners-feature/favourite-hook
Merge branch 'GAWMiners-feature/favourite-hook' into 0.5.1
dont make a copy of chat message
chat fix
removed updateLastOnlineTime from every socket call
pruning empy notifications for daily emailer
removed helpers.done