GUI-862
support for add/remove tiles on dash
added test on accounts tile'
merged develop
GUI-862
updates per UX review
fixed entity
Merge pull request #1035 from eucalyptus/GUI-862

GUI-862 support for add/remove tiles on dash, CI build passed: http://10.111.4.12/job/Eucalyptus%20Console%20Pull%20Request%20Monitor/1067/