Added two charts for Number of Volumes and Total Volume Storage quotas
on Python launch instance modal when cinder is enabled.
The charts reflect the volume usage of the new instances to be created
as the user changes the configuration on the modal.
Change-Id: I68a88cc867dd36f3d29cd77c1825858f86f3713f
Partially-implements: blueprint launch-instance-volume-quotas
hozoin doc says that the horizon directory holds the generic
libraries and components that can be used in any Django project.
So, this patch move js files related with Openstack components into
openstack_dashboard folder.
Change-Id: Ib4ed05e1136ee3f70a201139e456d4c3b93519f3
Closes-bug: #1635519