removed unused Fascade
updated documentation
Improved notifications for failed activity checkins
small bug fix to session handling
Bug fix in activity lockout
- Added Notification and Channel listeners implementation to master.
Merge branch 'master' into group-feature

* master:
  - Added Notification and Channel listeners implementation to master.
  Bug fix in activity lockout
  small bug fix to session handling
  Improved notifications for failed activity checkins
  updated documentation
  removed unused Fascade

Conflicts:
	Plugin.php
	composer.json
	models/Settings.php
	models/settings/fields.yaml
	updates/version.yaml