Add release note for Angularization
Add release note for Angularization

This patch adds release note for Angularization of five panels.

Change-Id: I50ffed121925add146a4fb31188263877137c2bd

openstack/senlin-dashboard,stackforge/senlin-dashboard,stackforge/senlin-dashboard,openstack/senlin-dashboard,openstack/senlin-dashboard,openstack/senlin-dashboard,stackforge/senlin-dashboard