Add helper.IsContentType and use it everywhere
Three sites in gitlab-workhorse check the content type of HTTP requests or responses. Introduce a helper method to assist with this, and make all sites use it.
Closes #90 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Three sites in gitlab-workhorse check the content type of HTTP requests or responses. Introduce a helper method to assist with this, and make all sites use it.
Closes #90 (closed)