ToDo/ReimplementAdminNoticeboards

Instead of notifying a random Admin on his/her Message Wall, there should be a better way to notify admins. This actually currently exists, but are not used in the form of the Admin Noticeboard. We should consider reimplementing something like that, or repurposing one of the forums to achieve this effect.

Goals

 * Have a common way to notify (all) Admin(s)
 * Remove link/update Admin Noticeboards

Tasks

 * Change navigation bar to link to new solution
 * Notify the admins to check the new solution
 * Possibly repurpose one of the forums for this