Change user groups rights on ckb.wikipedia

Remove 'eliminator', 'trusted' and 'editprotected' user groups
Allow bureaucrats to add/remove 'accountcreator' user group

Also remove redundant 'reupload-own' right from sysops and some clean up

Bug: 69394
Change-Id: I37e27468fc96dc50f0d7bd9320b85f26797c1724