Move header to generic MinervaTemplate

Slight modifications to handling of special page headers to store
them in one template variable. This makes a few html changes to the
special page making it more consistent with the normal page skin

Ensure watch star doesn't initiate on special pages

Change-Id: I95d3cdacb6c07744541f0a0d5d04d2b976dcf22b
Merge "Move header to generic MinervaTemplate"