Localisation updates for MediaWiki extension messages from Betawiki

Localisation updates for MediaWiki extension messages from Betawiki
* AjaxShowEditors: bcl, hsb added
* AntiSpoof: bcl, eo, hsb added
* Asksql: hsb added
* BackAndForth: bcl, eo, hsb added
* BadImage: bcl, hsb added
* BoardVote: bcl, hsb added
* BookInformation: hsb added
* CentralAuth: hsb added, pt updated
* CheckUser: hsb added
* Cite: bcl, eo, hsb added
* ConfirmAccount: hsb added
* ConfirmEdit: hsb, lv updated
* Contributors: hsb, su updated
* CountEdits: hsb, no, ro updated

Diffs checked by Raymond