Hygiene: Remove title exists check on Special:History

Without 404 it shows "No history matches the filter provided."
This is also accurate and probably more helpful considering
pages can be deleted. Restore the banner for non-existant pages.

The banner for non-existent pages will show a red link.

Change-Id: Ia0a612af3ff51c905eda8d9dbcbbefa10ee09fa6
Merge "Hygiene: Remove title exists check on Special:History"