Updated docs/scripts and docs/emacs

  * scripts/misc.org: added new script 'ifcfg-report', it is used to
    send information about network configuration of a host (note, that
    message is encrypted, so it will be hard enough to obtain
    information from a message without private key);
  * emacs/emacs.org: changed name of enabled Babel "interpreters": sh ->
    shell.