* fix check for null
* add tests
* fix for early return
* Allow check for null and non-existent value
Some connectors uses a non existent prop instead of allowing null
Modified test case to look if null exists or the prop is non existent
* Check for null value with geo near query
* Apply requested changes
* change test to two users and simplify
* check error first
* Fix simple query test case with null value
* BDD for connectors w//o null support
e9ff88f453