Fixed: CIC not always accessible via TicketZoom (bug#10491).
Squashed commit of the following:

commit cac9a3cc1c9a741912eeaa3973af754717a6f934
Author: s7design <otrs@s7designcreative.com>
Date:   Wed May 7 14:02:20 2014 +0200

    Deleted code for check permission

commit 32bbfa7be0cfbdc8e75a05887950efb17dfe0b47
Author: s7design <otrs@s7designcreative.com>
Date:   Wed May 7 11:58:43 2014 +0200

    http://bugs.otrs.org/show_bug.cgi?id=10491

    Added link gor CIC in AgentTicketZoom