Steps to reproduce:
This is an issue that occurs in PR627
1. Start Opencast
2. Login to the admin ui ng
3. stop the Opencast server
In the past we had a (red) notification that the server is not available. In pr627 this notification is gone.
Seems that in newer AngularJS versions, the semantics of "Connection Refused" has changed, see http://stackoverflow.com/questions/23914893/angular-js-http-intercept-neterr-connection-refused
Just verified that the HTTP interceptor is working, it just doesn't get the Connection Refused.
On https://github.com/angular/angular.js/blob/master/CHANGELOG.md, for 1.3.19, we find:
$http: propagate status -1 for timed out requests (f13055a0, #4491, #8756)