NEON-1095 Implemented a work around for the conflict between angular events and the trays being collapsed by bootstrap.  This is a serviceable work-around to have only 1 tray active at a time but is a bit brute force in nature.  An alternate approach would be to adjust the nav structure to better match bootstrap accordion functionality though this proved annoying on the first attempt.
Merge branch 'angular-demo' of https://github.com/NextCenturyCorporation/neon into angular-demo