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.

changeset:   0:9426b370c206
tag:         tip
user:        My Name <myname@example.com>
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     commit-1