was starting to get crowded with supporting image files.
This changes the following things
*Moves the media files to a different directory
*Changes the references to the files to reference there new locations
2 semi-unrelated changes
*Modify the README file that was basically giving credit for the images where due to explain what the images are for.
*set svn:mime-type to image/svg+xml for the svg files.
* Removed the ZIP subtypes from $wgMimeTypeBlacklist, they no longer need to be there.
* Added ZipDirectoryReader. Added some small ZIP files which are used to test its various error cases. Most were constructed with a hex editor.
* Fixed getStatusArray() to return a consistent type regardless of whether the error message has parameters. This allows error messages with no parameters to work with the Status object conversion code in UploadBase::verifyFile().
