update payday self-checks to exclude manual exchanges

[chadwhitacre]

Reticketing from #2290.

[chadwhitacre]

I added and recorder is null to the four relevant queries. That fixed the first query in the function but now the third is choking on an old payday.

[chadwhitacre]

My hypothesis is that we repaired the paydays script in the past using a query that didn't exclude manually recorded exchanges. Now, don't we want to include manually-recorded exchanges in the payday withdrawals figure? MassPay falls under this category (recorder is not null) and we want that reflected somehow.

[chadwhitacre]

That would require changes to payday.py and for now we really just need to fix the self-checks so we can get #2290 back on track.

[chadwhitacre]

Repaired in production with update paydays set ach_volume =-1885.73 where id=74;.