* 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
