Add OK or Successful HTTP codes 200-206 to HttpResponse::isOK(). Fixes #3531
Merge pull request #1072 from uzyn/httpresponse-3531

Add OK or Successful HTTP codes 200-206 to HttpResponse::isOK().

Fixes #3531
Don't treat tables that substring match as associations

The table structure of:

- packages
- userpackages
- georegions
- userpackages_georegions

Should not create a habtm between packages & georegions.

Fixes #3532
Only bake HABTM associations for tables that exist.

bake often guesses wrong when it comes to habtm. Only add associations
we're highly confident of. This includes tables where the foreign table
also exists.

Refs #3532