fix(frontend): fixed changing location

before we were setting the location on the window when we should have been just using Angular $location service instead

[TESTING -> tested locally with docker compose and a complete build]

- [ ] It works!
- [ ] Comments provide sufficient explanations for the next contributor
- [ ] Tests cover changes and corner cases
- [ ] Follows Quay syntax patterns and format

static/js/services/plan-service.js

@@ -2,9 +2,9 @@
  * Helper service for loading, changing and working with subscription plans.
  */
 angular.module('quay')
-       .factory('PlanService', ['KeyService', 'UserService', 'CookieService', 'ApiService', 'Features', 'Config',
+       .factory('PlanService', ['KeyService', 'UserService', 'CookieService', 'ApiService', 'Features', 'Config', '$location',
 
-function(KeyService, UserService, CookieService, ApiService, Features, Config) {
+function(KeyService, UserService, CookieService, ApiService, Features, Config, $location) {
   var plans = null;
   var planDict = {};
   var planService = {};
@@ -67,9 +67,9 @@ function(KeyService, UserService, CookieService, ApiService, Features, Config) {
 
       planService.getPlan(planId, function(plan) {
         if (planService.isOrgCompatible(plan)) {
-          document.location = '/organizations/new/?plan=' + planId;
+          $location.path('/organizations/new/?plan=' + planId);
         } else {
-          document.location = '/user?plan=' + planId;
+          $location.path('/user?plan=' + planId);
         }
       });
     });