Error messages updated. While Haha! is awesome, it is not very descriptive.

webserver/api.go

@@ -25,7 +25,8 @@ func checkAdmin(w http.ResponseWriter, r *http.Request) bool {
 		ok, _ = adminMatch(username, password)
 	}
 	if !ok {
-		failAuthentication(w, "/skald-api/")
+		failAuthentication(w, "/skald-api/",
+			"Authentication required. Provide valid administrator credentials.")
 		return false
 	}
 	return true
@@ -71,7 +72,8 @@ func checkPasswordAdmin(w http.ResponseWriter, r *http.Request, hallname, user s
 			}
 		}
 	}
-	failAuthentication(w, "/skald-api/")
+	failAuthentication(w, "/skald-api/",
+		"Authentication required. Provide valid administrator credentials.")
 	return false
 }