fix use secrets.db instead of process.env.MONGOHQ in datasource.local.js

this should eliminate timeout issue.
I'd bet my bottom dollar.

server/config.local.js

@@ -17,4 +17,4 @@ module.exports = {
     clientID: process.env.GITHUB_ID,
     clientSecret: process.env.GITHUB_SECRET
   }
-};
+};

server/datasources.local.js

@@ -3,8 +3,8 @@ var secrets = require('../config/secrets');
 module.exports = {
   db: {
     connector: 'mongodb',
-    connectionTimeout: 15000,
-    url: process.env.MONGOHQ_URL
+    connectionTimeout: 5000,
+    url: secrets.db
   },
   mail: {
     connector: 'mail',