Adds link to block storage page from config and admin scheduler pages. Also fixes missed update to admin scheduler page from bug-1192627,

modified link text as per anne https://review.openstack.org/#/c/34048/

updated URL text to reflect latest cinder doc title

bug-1193432

Change-Id: Ie33d039a3f668215d32e18edb8b5b3bea71b9aa6
author: sean roberts
Merge "Adds link to block storage page from config and admin scheduler pages. Also fixes missed update to admin scheduler page from bug-1192627,"