bacula: generate bconsole config
btrfs: btrfsck is now actually the same binary as "btrfs"
symlinked to save space.
filesystems: add priority option for swap devices.

Useful for setting up raid0-like load balancing for swap.
By giving multiple swap devices the same prio.
kde4: use udisks2 for kde versions that support it.

Currently, none do, although kde 4.10 is supposed to be able to use it.
mediawiki: Update to 1.20.5
zabbix: Don't set the mbstring.func_overload option

This breaks MediaWiki running in the same web server.  Zabbix no
longer seems to need it anyway.
bacula: file daemon needs to run as root
bacula: add ExecReload
systemd.sockets: Add listenStreams option for specifying several sockets
Add chrony service
Also, do not build and add ntp to the system unless it is enabled.
chrony: properly set rtconutc option, and add a few more options
atop: Add basic config option for /etc/atoprc
Merge pull request #170 from wizeman/atop

atop: Add basic config option for /etc/atoprc
Merge pull request #169 from wizeman/chrony

Add chrony service
gnunet: it was missing extraGroups
openvpn.nix: Use systemd.*

Also add an option ‘autoStart’ to configure whether an OpenVPN
instance should be started automatically.  And don't log to
/var/log/openvpn-* anymore.
apparmor: Fix broken iputils/ping profile
apparmor: Fix loading multiple profiles

apparmor's systemd service wasn't working when multiple profiles were
defined, due to the ExecStart commands in the service file being
broken into multiple lines, instead of being separated by ';'.
apparmor: Fix service stop

When stopping the apparmor service, the profile removal failed with
parsing errors due to not including the
${pkgs.apparmor}/etc/apparmor.d directory.
add networkmanager_openvpn to systemPackages