python-hetzner: Update to new version 0.5.0.

This introduces the following changes:

 - New subcommand "show" for hetznerctl which shows additional
   information about one or more servers.
 - Allow to get subnets of a specific server through the "subnets"
   attribute.
 - Allow te get IP addresses of a specific server through the "ips"
   attribute.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
hetzner-nixops-installer: Remove package.

This package now is in NixOps directly, so we don't need it here
anymore.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
chromium: Update beta and dev release channels.

Introduces the following new versions:

beta: 29.0.1547.22 -> 29.0.1547.32 (builds fine, tested)
dev:  30.0.1568.0  -> 30.0.1573.2  (builds fine, tested)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>