Moved queue start into UrlServices init block

refs https://github.com/TryGhost/Toolbox/issues/125

- The "fetchResources" is only used from one place and does way to many things at once:
- Fetches resources from the DB-
- Hooks up event listeners
- Starts the queue

- These are three different things, and should be three different methods ideally

core/server/services/url/Resources.js

@@ -97,15 +97,7 @@ class Resources {
             });
         });
 
-        Promise.all(ops)
-            .then(() => {
-                // CASE: all resources are fetched, start the queue
-                this.queue.start({
-                    event: 'init',
-                    tolerance: 100,
-                    requiredSubscriberCount: 1
-                });
-            });
+        return Promise.all(ops);
     }
 
     /**

core/server/services/url/UrlService.js

@@ -288,6 +288,12 @@ class UrlService {
      */
     init() {
         this.resources.fetchResources();
+        // CASE: all resources are fetched, start the queue
+        this.queue.start({
+            event: 'init',
+            tolerance: 100,
+            requiredSubscriberCount: 1
+        });
     }
 
     /**