Adds username and password to redmine tracker config.
Using local variable for configuring redmine tracker settings.
depend on Faraday for the hubot notification service
add hubot icon
use the correct images
add hubot service
add test and code for the hubot notification service
copy&paste, bad boy
replace faraday with httparty
update airbrake api to 2.4
Update Devise in response to posted security bulletin

ref: https://groups.google.com/forum/?fromgroups=#!topic/plataformatec-devise/hj6i26Dvshw
add helper to generate urls at a single point
add problem url into the chat message
Config must be symlinked before assets:precompile is run
Ignore SECRET_TOKEN absense during assets:precompile

This is necessary because Heroku environment variables
are not available during assets precompile stage.
Typo [ci skip]
Update notifier.js from https://raw.github.com/airbrake/airbrake-js/master/dist/notifier.js
added xmpp4r/muc rooms so notifications can be sent to a room
added service, service_url, user_id so that messages can be sent to any jabber client and to rooms
added support for any jabber and ability to send to rooms