Update .travis.yml
dont show leave msg when adding pp
Update Resources/views/PagePartAdminTwigExtension/widget.html.twig
Merge pull request #61 from Kunstmaan/fix/no_message_add_pp

dont show leave msg when adding pp
Merge branch 'master' into 2.1

* master:
  Update Resources/views/PagePartAdminTwigExtension/widget.html.twig
  dont show leave msg when adding pp
  Update .travis.yml