Remove upload rights on wikis where local uploads are disabled
This patch attempts to work as commonsuploads.dblist, that is:
on wikis where we want to fully disable local uploads, we can add the
dbname of the wiki to uploadsdisabled.dblist. This will be imported to
InitialiseSettings.php via CommonSettings.php and will:
1.- Modifies the "upload" link on the wiki sidebar to the uploadwizard
on commons, and will display on $lang.
2.- Remove from users, autoconfirmed, confirmed and sysops the upload
3.- Fully disable local uploads.
This way, we will just have to add a wiki to this list, instead of
having to make several changes on the wiki config.