in SQL queries

include methods on #connection and delete_all/destroy_all
Fixes #434

fixes #422

This commit introduces a new check that creates a warning when it
detects a call to verify_mode= when the right hand of the assignment is
OpenSSL::SSL::VERIFY_NONE.

makes attr_accessible model warnings have a fingerprint which will include the attribute in the uniqueness calculation

fixes #281

and other safe-ish values

especially since JSON report requires file name

closes #391

in practice, this ends up with annoying false positives

in particular, don't try to retroactively build call chain.
Fixes #385