Add service hook for Distiller

Distiller is a Continuous Integration and Deployment service for iOS.

http://distiller.io
Add Distiller help text
Update Distiller hook to use HttpPost as parent class
github push hook for visualops.io

Signed-off-by: Wang Xu <xu@mc2.io>
Specify webhook.secret as a password
remove duplicated titles from config documentation
Remove more H1's from service docs
Turns off Amazon SNS test which relies on valid AWS creds

Hopefully we can get some valid creds in here sometime to turn this back
on. Or, figure out a way to test this in isolation.
Update Jira to JIRA
Uppercase the JIRA service class name
This is the quickest way to ensure that the service title appears as JIRA as opposed to Jira in services.json... and the dropdown list of services on GitHub.com
Prefer JIRA over Jira
Fixing typeo and bug in static file selector.
Use Travis CI as title for the service.
Add maintainer and support for Travis CI.
loosen pushbullet api restriction, fixes #846
Add DjangoPackages Service.
Fix Distiller support URLs
Adding Stormpath service to GitHub services.
remove explicit port mention
make tests reflect reality