Return a little more information in Issue webhook

When a webhook for issues is triggered, it should also return the
resource URL, and the action that was performed (ie: Was it reopened,
updated, opened or closed)
Added an UrlBuilder for building rails named routes

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Fixed the spec

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Merge pull request #7013 from jvanbaarsen/better-webhook-information

Return a little more information in Issue webhook