Using 401 as unauthorized code

Change-Id: I9bbc6e558c1c2dd0dd2e859580da0776320292d0
diff --git a/src/interceptors.ts b/src/interceptors.ts
index 3ac672d..80be130 100644
--- a/src/interceptors.ts
+++ b/src/interceptors.ts
@@ -12,8 +12,7 @@
 export function userStatusInterceptor($state: angular.ui.IStateService) {
 
   const checkLogin = (res) => {
-    // NOTE why are we returning 403 in place of 401??
-    if (res.status === 403 || res.status === -1) {
+    if (res.status === 401 || res.status === -1) {
       $state.go('login');
     }
     return res;