deleted: old   sql-memo/source, now separate memo.
Makefile: fixed the name uni memos, and added xml targets
conf.py: fixes and auto versioning

    -   fixed the name uni memos
    -   updated copyright
    -   added code to derive version from git.
cups.rst: fixed references, added highlight, fixed indent
ssh.rst: fixed references, added highlight, fixed indent
gnupg.rst: new gpg memo, partially taken from my old memo on mzlinux.
index.rst: added encryp and gpg memo.
ssh.rst: fixed links in cipher section.
commands.rst: additions and fixes

-   Added a "text handling" section
-   Added a "Desktop management" section
-   Changed references in ssh section
-   Rewritted sed in preformatted text
-   Fixed some broken links
gnupg.rst: added references.
vi_cheatsheet.rst: new section.
nano.rst: new cheatsheet.
index.rst: added vi and nano cheatsheet.
ssh.rst: reorganized, added content

-  Reorganized and completed connection sharing
-  Added file transfer on a quick link.
commands.rst: some more on ssh and gpg.
network.rst: new file added a nmap section
index.rst: added network
ssh.rst: added the match directive.
network.rst: more on nmap options.
devices.rst: new file on device management.