After MediaWiki change I308617427309815062d54c14f3438cab31b08a73
there's no longer a "default" user/page/revision in the database, so
the user/page/revision IDs in the tests should start at 1 and not 2.
Bug: T345984
Change-Id: I3271e4fdd52cf6e2074d8c9d3d5571a69b150476
Use revision IDs to break the tie, consistently with MediaWiki (see
RevisionStore::getRelativeRevision) instead of assuming that the
revision we're processing now is somehow both older *and* newer than
the other one (the mind boggles how that ever made sense to me).
Change-Id: I9f1a07124301a36be68578d908353b72f0442c00
discussiontools_item_pages row itp_id=5 has incorrect
itp_oldest_revision_id. It should point to the older of the two
revisions with the same time, but it points to the newer one.
discussiontools_item_revisions row is missing.
Depends-On: I56f0e161e5438d5f77b7d53d4db7411f90f97d05
Change-Id: I61ed42515891a84729455a7a32c98276c7cacd40
