Operational things for sprint 33 

- Stop nightly emails (#2166)

- Readonly DB configuration code wasn't working when you didn't specify a read-only database.  Not something that would affect prod, but seen in dev and staging environments.  Fixed in a949797

- Config file cleanup.  "report" is just my little chef stuff for creating my nightly users-by-class graph.  Previously had it's own dedicated configuration section that just had readonly DB info.  No longer needed now that we have readonly DB stuff in the main "aws" stanza.  Fixed in 883b1d2

Tested on dev.