Fixed page overlap for file revision links in hgweb. This is another step to fix issue189, but currently the file revision numbers are read as changeset revision numbers, so the link will point to the wrong revision.

adding dir/bar
adding foo
dir/bar
foo
adding dir/bar_2
adding foo_2
dir/bar_2
foo_2
adding a
adding c
adding b
adding d
removing a
removing c
recording removal of a as rename to b (100% similar)