listify some functional tests; add tests for insert with kwargs. (not passing for mock
add util functions for row replace/update on insert.
test insert with error setting
done unit-testing implementation of table insert with conflict setting.
broke assertEqUnordered.  oops.
make all insert tests pass against real db; change table insert helpers to match rethink's behavior.
existing tests passing with insert changes.
all new insert tests passing against mockthink.