Bug 1012666 - Fix up checking if IRC topics are settable, fix regression when joining a channel as op. r=aleth
Bug 1009284 - Joining throbber sometimes only shows top left corner, r=florian.
Bug 1017946 - Kill usage of hasOwnProperty global, XMPP part. r=aleth
Bug 1017946 - Kill usage of hasOwnProperty global. r=aleth
Bug 1018602 - "Your account has been reconnected" message not displayed in private conversations if the other party is not a contact. r=aleth a=RyanVM

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extra : amend_source : a48104ac4b84357149ee02b6618d3318866bb2ee