Add untested unsubscribe code to EventService
Add untested unsubscribe code to EventService

jacksonic/foam,jacksonic/foam,mdittmer/foam,foam-framework/foam,foam-framework/foam,osric-the-knight/foam,mdittmer/foam,osric-the-knight/foam,mdittmer/foam,jacksonic/foam,shepheb/foam,jlhughes/foam,mdittmer/foam,foam-framework/foam,shepheb/foam,jlhughes/foam,osric-the-knight/foam,jacksonic/foam,jlhughes/foam,foam-framework/foam,jlhughes/foam,osric-the-knight/foam,foam-framework/foam,shepheb/foam