Add "fetch" option to pledges list

Otherwise it doesn't actually fetch anything :/

server/index.js

@@ -498,6 +498,7 @@ router.get('/pledges', async (req, res) => {
     await Pledge
     .forge()
     .orderBy('created_at', 'DESC')
+    .fetchAll()
   ).models
 
   if (DEBUG) console.log(`Listing ${recentPledges.length} pledges`)