Domain unsuspending (and suspending) button

Summary:
...for admins

Also added --no-coverage to ./phpunit-fast, so there's no phpunit warning printed

Test Plan: ./phpunit

Reviewers: #hkccp_developers, vanmeeuwen

Reviewed By: #hkccp_developers, vanmeeuwen

Subscribers: #hkccp_developers

Differential Revision: https://git.kolab.org/D1576