set page type so we can really turn off constitency for lords
set current tab to active class so it's highlighted

and change class name to active for consistency with in page nav
set page type as class on hero banner

so we can use for special cases
peers and royals can have very long names so give them more space

also remove padding on constituency in the case to give it a bit more
room
Merge remote-tracking branch 'origin/mp-page-template' into mp-page-template