for backwards compatibility

now we no longer limit generation to the extensions in mime types,
because file icons are used in downloadable code blocks, too.

All icons were regenerated with the latest update of the generator.

This reverts commit ea62d531.

Made sure all links align as well as possible in a list, giveing them
all the same padding.

Adjusted the template's icons to use 16x16 size and use the additional
space for alignment.

Adjusted some of the default interwiki icons (amazon, skype, paypal).

the new template allows to use a favicon in media/wiki/favicon.ico so we
should support uploading it as well.

This patch reduces the colorspace of GIF files and has optipng
optimization run on PNGs. Changes shouldn't be visible except in
filesizes.

Passed every png file through http://www.smushit.com/ysmush.it/ saving some 1-2kb of binary image data

Icon downloaded from http://forum.skype.com/style_emoticons/skype/skype.png

I asked someone internally for file copyright and answer was ok (do
whatever you want)

usage: [[paypal>email@address.com]]

partly reverts previous patches to keep matching styles with other
DokuWiki buttons