This SQL tries to insert as much data as possible into the `user_stats` table by either calculating or by approximating stats based on existing. It also fixes an error in the calculation of `reply_count`which mistakenly contained all posts, not just replies.
This change also disables some steps in the `import:ensure_consistency` rake task by setting the `SKIP_USER_STATS` env variable. Otherwise, the rake task will overwrite the calculated data in the `user_stats` table with inaccurate data. I'm not changing or removing the logic from the rake task yet because other bulk import scripts seem to depend on it.
4d045bfc61