chore(package): update ember-modal-dialog to version 0.8.6
chore(package): update ember-modal-dialog to version 0.8.6

https://greenkeeper.io/
gabycampagna/frontend,djvoa12/frontend,ilios/frontend,gboushey/frontend,jrjohnson/frontend,gabycampagna/frontend,dartajax/frontend,dartajax/frontend,stopfstedt/frontend,thecoolestguy/frontend,stopfstedt/frontend,ilios/frontend,thecoolestguy/frontend,djvoa12/frontend,gboushey/frontend,jrjohnson/frontend