Always try to put redirects at index 0, offset 0

This is a hack to make redirects work whilst Parsoid just dumbly inserts them in-
place, and should be removed once Parsoid handles that logic.

Bug: 61862
Change-Id: Ie3dc85ec29db3197f1a13744f7974f0bec5d427d
Merge "Always try to put redirects at index 0, offset 0"