overrides: Update kernel source to v3.10.0-rc6.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Update kernel source and config to v3.11-rc5.

I should commit here more often, because between -rc4 and -rc5 there
were changes in the configuration. But skipping the commits of release
canidates before -rc5 probably doesn't harm that much, so let's jump
into the future... swoooooosh...

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
common: Add redshift to X session.

After trying it for some time, I just decided it to be the default from
now on, let the world turn RED :-)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
common: Add i3 config to system configuration.

This now embeds the i3 configuration file directly into the X session
using the new option introduced by NixOS/nixos@9392329.

The config file itself is not yet cleaned up and there is still quite a
lot of cruft left over from my Debian system, but let's clean it up
later.

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