list user subscribed channels
use ng-if for sought group display condition
temporarily disable polling list updates

pending a more nuanced implementation - namely updates should only occur
when a tab is active, but also need to be triggered when a tab is newly
activated
expose all angular-ui-bootstrap templates
relocate vendor scripts for inclusion simplicity
include ng-ui-bootstrap accordion and pagination
paginate game list
use recommended bootstrap
paginate user listing
use accordion to separate channel and user lists
Merge branch 'ux_enhancements'