Move all trello classes to puppet_labs/trello
Update requires for trello classes
Update Trello constant namespacing
Update specs for trello namespace change

Nominally this should not be an independent commit and should be rolled
into the commits introducing the change, but that would make for even
bigger commits than what we have now.
Move all github related files to github directory
Move github related code under Github namespace
correct trello/card require
update github web services link
Stub out initial jira code
Add single require point for jira
Extend jira pull request handler
Bolt on basic delayed job functionality
Move pull request description to actual PR class
Add pull request summary, stub github API in specs
Fix receiver of pull_request_handler methods
Correct casing of JIRA constant
Convert PuppetLabs::Jira::API to a mixin
Handle string values for JIRA_USE_SSL
expand pull request handler issue generation
Remove jira stats from /event/github route

The PullRequestController is entangled with the output of the pull
request app, so changing the output in the controller breaks the sinatra
app. Since we don't actually use this information and the request
routing will need some work later, we can revert this to make the tests
pass, and address this at a later date.