Write a script to check the life of the mediagoblin.org server
every 12 hours.


-  is wiki.mediagoblin.org up?
-  is mediagoblin.org up?
-  is docs.mediagoblin.org up?
-  is mailman qrunner running?
-  etc.

The hacking howto in the wiki is too big and covers too many
different things. It's better to break it up into smaller topics
which are easier to link to.

Action items:


1. figure out how to break it up
2. break it up

The sooner this gets done, the better.

As part of issue `#483 </issues/483>`_, we're moving documentation
around between the manual (docs/ in mediagoblin repository) and the
wiki. The manual will hold the site administration documentation.

This bug is to outline what that entails and create bugs to write
the resulting content.

This should get done for 0.1.0.