Changes

* [irc://irc.mozilla.org/london #london] - general chat for people connected to or interested in the London MozSpace

* [irc://irc.mozilla.org/montreal #montreal] - general chat for people in Montreal, including community. Bilingual channel.

* [irc://irc.mozilla.org/mv #mv] - general chat for people in the Mountain View office

* [irc://irc.mozilla.org/seattle #seattle] - general chat for people in the greater Seattle area