We need to create a new group in the wiki for people with enhanced
editing powers. Elrond pointed out we already had a plan for this
and to call it "Friends of the Elvenlord". Then he mentioned maybe
"Friends of the Goblin" is better.

Anyhow, MediaWiki rights are listed here:

`http://www.mediawiki.org/wiki/Manual:User\_rights <http://www.mediawiki.org/wiki/Manual:User_rights>`_

It should have at least suppressredirect.

Most current migrations add a field to a table/collection. The code
is always the same. So create a function to do the job.

The tag specifies that the image is to be displayed rotated and
how.

The tag is supported by:


-  MediaWiki (it generates thumbnails already rotated).
-  digiKam (there is an option to set Orientation after rotating an
   image)
-  Geeqie (rotates for displaying)
-  Nautilus
-  Eye of GNOME
-  Thunar
-  exiftran (according to the man page)