Add Contacts repo to CONTRIBUTING.md
Merge pull request #3366 from owncloud/contributing_add_contacts

Add Contacts repo to CONTRIBUTING.md
Add Compound property to avoid double escaping values.
fix for losing mount point "/"
Merge pull request #3376 from owncloud/fix_for_disappearing_root_mount_point

fix for disappearing root mount point on lib/files/filesystem.php
No unit test coverage reports for pgsql - this causes issues on Jenkins.
Merge pull request #3374 from owncloud/vobject_compound_property

Add Compound property to avoid double escaping values.
Merge branch 'master' into ===_and_!==_in_lib