Assets routes should be parsed after server routes so /add-to-collection URL will work

server/server.js

@@ -113,11 +113,12 @@ app.get(
   passport.authenticate('basic', { session: false }), (req, res) => res.json(req.user)
 );
 
-app.use(assetRoutes);
 // this is supposed to be TEMPORARY -- until i figure out
 // isomorphic rendering
 app.use('/', serverRoutes);
 
+app.use(assetRoutes);
+
 app.use('/', embedRoutes);
 app.get('/auth/github', passport.authenticate('github'));
 app.get('/auth/github/callback', passport.authenticate('github', { failureRedirect: '/login' }), (req, res) => {