Update app/helpers/backtrace_line_helper.rb

Fixes issue #328 "Backtrace tab not showing file names for application code"
Adds username and password to redmine tracker config.
Using local variable for configuring redmine tracker settings.
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
gtalk now has more functionality
adderd xmpp4r/muc for gtalk rooms
extra tests for room support as well
check service is accepted with connect
add app name and display just the error class instead of the truncated message
Merge pull request #390 from luxflux/even-better-hubot-notifications

More hubot notification tuning
Merge pull request #347 from magiclabs/redmine-tracker-auth-fix

Adds username and password to redmine tracker config.
Move "YAML::ENGINE.yamler = 'syck'" to top of environment.rb
Fixed Redmine specs
Removed unnecessary regex..
Added config option to turn on/off internal error details in production
Fixed new display_internal_errors setting - environments/production.rb doesn't have access to config yet
xmpp migration for seemless update
Merge pull request #383 from damau/master

Support for multiple XMPP clients and ability to send to a room and user