Added support for grouping tasks by challenge (#8469)

* Added support for grouping tasks by chllenge

* Fixed tests and updated default challenge model name

* Fixed broken member test

* Updated setting string

* Changed to shortName

* Began abstracting task grouping

* Added initial task directive code

* Added new directives to help with grouping of tasks

* Removed random console.log

website/common/script/libs/taskDefaults.js

@@ -22,7 +22,9 @@ module.exports = function taskDefaults (task = {}) {
     tags: [],
     value: task.type === 'reward' ? 10 : 0,
     priority: 1,
-    challenge: {},
+    challenge: {
+      shortName: 'None',
+    },
     reminders: [],
     attribute: 'str',
     createdAt: new Date(), // TODO these are going to be overwritten by the server...