Fix lint errors.

config/models.js

@@ -1,4 +1,4 @@
 module.exports.models = {
   connection: 'mongodb',
-  migrate: 'safe'
-}
+  migrate: 'safe',
+};

models/cards.js

@@ -82,7 +82,7 @@ Cards.attachSchema(new SimpleSchema({
   description: {
     type: String,
     optional: true,
-    defaultValue: ''
+    defaultValue: '',
   },
   requestedBy: {
     type: String,