Sabrecat/groups quick wins (#11146)

* WIP(groups): quickish wins

* WIP(groups): two quick wins
1. Don't show task creation button if user is not leader or manager
2. Don't require JS confirm() for approving tasks

* fix(group-plans): allow delete from options button

* fix(group-plans): update tasksOrder when task deleted

* fix(group-tasks): dismiss notification when user takes action

* refactor(tasks): DRY out create button styling

* fix(group-tasks): sync after claiming/unclaiming

* fix(claiming): better sync and notif handling

* fix(tasks): force sync instead of explicitly clearing notif

* fix(tasks): reposition task creation button

* fix(group-tasks): default to single completion

* fix(group-tasks): move completion condition field above approval switch

* fix(group-tasks): todo validation error and approval notif dismissal

* fix(group-tasks): default single completion on client

* fix(group-tasks): move completion condition up more

* fix(group-tasks): maintain client-side user assignment list

* fix(group-tasks): remove approval notifications when task deleted

* fix(group-tasks): send assigned task to top of task list

* fix(group-tasks): remove useless tag filter dropdown

* feat(group-tasks): notify user of assigned task

* fix(group-tasks): don't allow approval of tasks w/ no approval request

* fix(tests): adjust expectations

* fix(group-tasks): more sensible action on assignment notif click

website/server/models/task.js

@@ -113,7 +113,7 @@ export let TaskSchema = new Schema({
       requested: {$type: Boolean, default: false},
       requestedDate: {$type: Date},
     },
-    sharedCompletion: {$type: String, enum: _.values(SHARED_COMPLETION), default: SHARED_COMPLETION.default},
+    sharedCompletion: {$type: String, enum: _.values(SHARED_COMPLETION), default: SHARED_COMPLETION.single},
   },
 
   reminders: [{