[api-ref] Add 'Show All' button
[api-ref] Add 'Show All' button

This patchs adds 'Show All' button to Clustering API UI.

Change-Id: I3c1fe626daf0d8ccc78b40328a0eb924967c8783

stackforge/senlin,stackforge/senlin,openstack/senlin,openstack/senlin,openstack/senlin