Docs texts for 5.0 patches

[Arjen Lentz]

Main docs page on site referring to base manual at MySQL, and then overview of patches/features.
Then pages for each patch documenting what they do, any config params, commands, output examples.
Most of the info is already "out there" but not that easy to find.

If you want to pick this up, you can simply start by adding the patch docs texts into a branch, in the same dir as the patch itself. We can then copy those texts onto the site and keep it all in sync and up-to date.

[Arjen Lentz (arjen-lentz)]

Added as blueprint: https://blueprints.launchpad.net/ourdelta/+spec/patch-docs
Not sure blueprints can be edited, they seem to rely on an external wiki link for work... (which we don't have) - in which case keeping it in a bug as a feature request might be easier.

[Arjen Lentz (arjen-lentz)]

Base docs added for Google userstatsv2 and flush_slow_query_logs patches.
Created http://ourdelta.org/docs index page, and http://ourdelta.org/docs-userstat as first docu page example!