Resolves #114

- Add test
- Fixed Newebe's playbook failing on first run on a fresh Debian 7 VM
- Restart supervisord on changes
- Security: Use /usr/sbin/nologin as login shell for newebe user
- Speed: Consolidate all 'apt' entries into one
- Strip trailing whitespaces
- Update to take advantage of apache2_module from Ansible 1.6
- Use file path=... state=absent instead of "rm" command to delete files

Adjust cipher suite assertions to match what's currently reported by the
server.

Remove WebTests.test_znc_http test since ZNC web interface isn't exposed to
the Internet.

(Tested only with Debian 7 VM from the Vagrantfile)

added dovecot-pop3d
allowed in the firewall
monitored with monit
added relevant tests

See #121

Added friendly_networks variable to denote whitelisted networks