Updated the docblocks for flag events.
Updated the docblocks for form classes.
Updated docblocks for link types.
Merge branch 'master' of https://github.com/socketwench/flag-drupal8

Conflicts:
	src/Plugin/ActionLink/AJAXactionLink.php
	src/Plugin/ActionLink/ConfirmForm.php
	src/Plugin/ActionLink/Reload.php