Registering new file.
Added new aliases to .ratpoisonrc.
Installed xscreensaver.

File: common/.xsession
Usual changes.

Some of changes are:

  - back to white background;
  - switched to Liberation Mono, look better on Gentoo;
  - use system's erlang, not from opt;
  - changed base email from zuav@yandex.ru to zuav@crystax.net.
Email, path, etc.