R1:7d757483a0db

Make everything 1000x or 1000000x slower

Summary:
In the great `pht()` conversion, some strings like "123,456" are now being printed as numbers with "%d". These come out as "123" instead of "123,456".

Use "%s" and "PhutilNumber" to present numbers with comma groupings.

Test Plan:
- Viewed DarkConsole.
- Viewed conduit logs.
- Viewed daemon logs.
- Grepped for `%d ms` and `%d us`.

Reviewers: btrahan, joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Differential Revision: https…