Story 1538: History page

Shuffle code from SpecialWatchlist to SpecialPageFeed so it can
be shared with Special:History

Diverge slightly from History design - make the page title a
link (okayed by Moiz)

Change-Id: I70933d73718fd0b31303c965f728c35dc3473a6d
Merge "Story 1538: History page"