change the tables headers.
&$extTypes: associative array of extensions types
-'ExtractThumbParameters': DEPRECATED! Media handler should override
-MediaHandler::parseParamString instead.
-Called when extracting thumbnail parameters from a thumbnail file name.
-$thumbname: the base name of the thumbnail file
-&$params: the currently extracted params (has source name, temp or archived
-zone)
-
'FetchChangesList': When fetching the ChangesList derivative for a particular
user.
$user: User the list is being fetched for