Now everything following '///' or '//!' is a doxygen comment.
This simplification fixes also the bug ('\n' was considered as part of
the doxygen comment and led to strange highlighting).
Task-number: QTCREATORBUG-8921
Change-Id: I6dae3b80ec11400f2f623897257782a80860a7f3
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>