Move destroy app link from show page to edit page

It was very easy to destroy the application instead of deleting errors

Also add a related test on the confirmation
Protect against nil methods in BacktraceLineNormalizer, and test same.
Merge pull request #370 from gdaniels/master

Protect against nil method in BacktraceLineNormalizer.
Merge pull request #358 from zetaben/feature/move_destroy

Move destroy application link from show page to edit page
Fixed migrations
Strip trailing / from IN_APP_PATH for url helpers
Ensure each Errbit deployment has a unique secret token

Otherwise cookies can be hijacked.
Let's use .present?
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
Merge pull request #373 from luxflux/hubot-notification

Hubot notification service
update airbrake api to 2.4
Merge pull request #360 from errbit/airbrake-2-4

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
Merge pull request #378 from cheald/master

Update Devise per posted security bulletin