Minor Update To Provider Config Docs

I added a brief summary to each provider configuration, fixed wording on some of the provider config page titles, and added a [provider] header. Previously, the first set of command options were not prefixed by a header and that seemed a tad confusing.

Of note, the mysqldump + LVM provider header has a funky wrap thing when pulling up the page directly. Not sure how best to go about fixing that.

Also of note that, as per the discussion on Holland-Discuss, the use of Provider in the documentation still needs to be removed. This update is not part of that.