General page alerts

Created a Alerting factory for page alerts. Updated controllers to include deleteConfirm function. A few small UI additions
All the responses are from the API server correct? If so, then I think it may be best just to have on generic response: _A server-side error has occurred. Please contact the server administrator_

My feeling is that user shouldn't really be aware of the fact that there even is an API server; any error'd responses from the API should be seen as a server-side issue. What do you think? Or is there a specific use-case you had in mind?