Fix auth_basic exemption in sample nginx.conf
Add original comments to included nginx configuration.
Add image to tag_deleted signal payload

Add image to tag_deleted signal payload. This is useful for things
such as a refcount extension, which needs to know the image that was
associated with the deleted tag so refcounts can be updated accordingly.
CONTRIBUTING.md: Rename from 'CONTRIBUTE.md'

To match GitHub's conventions [1].  With this change, folks will get
links to the contributing docs when they open a new issue or
pull-request using GitHub's web UI.

[1]: https://github.com/blog/1184-contributing-guidelines
CONTRIBUTING.md: Point closed-source hub issues to support-index@

To give @shin- a break from redirecting people ;).
Merge pull request #579 from wking/contributing

CONTRIBUTE.md → CONTRIBUTING.md and a support-index@ reference
Merge pull request #577 from ncdc/add-image-id-to-tag-deleted-signal

Add image to tag_deleted signal payload
Merge pull request #564 from Precis/nginx_auth_exemption

Fix auth_basic exemption in nginx.conf sample
Better config exception handling

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Slight grammar thing

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Fix #521

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Fix test

Fixed broken path resolution

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Enhance tag error output

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Cleaner bugsnag abstraction

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Enhanced debugging infos

- removed version / config leakage in headers for all requests
- moved versions output to ping
- added more hosts debugging infos in the ping endpoint
- renamed _versions to _debug
- removed version from the / endpoint
- made / text configurable (issue)

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Remove unused status endpoint

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Style

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Move bugsnag and newrelic code

... away from the main source to the extras subfolder

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Re-express CORS as extra

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)
Enhance documentation

Docker-DCO-1.1-Signed-off-by: Olivier Gambier <olivier@docker.com> (github: dmp42)