Merge branch 'koumbit-sarava' into 'master'

merge the mayfirst, koumbit and sarava changes

the monkeysphere module in shared is very old (2 years 4 months)! since then, sarava and koumbit have done significant work to improve on the module.

mayfirst did changes to allow choosing a keyserver, added flexibility, user configs and so on.

sarava fixed some bugs.

koumbit merged both with the shared modules, did a style cleanup and autoloading, added RAW_AUTHORIZED_KEYS, silence some warnings and randomized cron jobs.

this still fails in puppet 3.x, but is an improvement over what's already present.

See merge request !1