[Phpmyadmin-devel] wiki cleanup

Following the discussion and decision to migrate our main documentation away from the wiki, I've removed a large portion of the text. A few lingering subpages remain, in part because they have in depth information I felt needed further review and possible inclusion in the main documentation. Anyway, presumably there are some portions of what I deleted that may have been better written in the wiki or some examples a user included. If you see anything like that, please at least point it out to me or merge it back to the wiki or official documentation if you'd like. I don't recall deleting anything that was that different from the documentation, but then again, it's hard to read the entire page and remember differences between the two versions... Anyway, regards