Merge remote-tracking branch 'stable/master' into 5181_send_an_email_to_all_the_project_members
Send mail to project users

Change-Id: I315a1ecc889e8afc98373bc2687fbed686a0635a
Merge remote-tracking branch 'gerrit/5181_send_an_email_to_all_the_project_members' into HEAD

* gerrit/5181_send_an_email_to_all_the_project_members:
  Send mail to project users

Change-Id: Id4b475b584c52b8b3fcbc7e78d000629e73ec037
This is Tuleap 6.5.99.40

Change-Id: If086f9f6be4d6ab9d52ef59df5d0f2d61a60aa10