installation: update wtforms-alchemy to 0.12.6

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
docs: admin guides port from webdoc

* Adds auto-generated rst from webdoc admin pages.

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
installation: pip1.6 ready setup.py

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
Reviewed-by: Jiří Kunčar <jiri.kuncar@cern.ch>