* Refactor GREL Get tests
- move helper up to RefineTest
- move tests to the correct module
* Extend forEach() to support JSON objects - fixes#3149
Also add tests for existing forEach forms in addition to the new one
* Add a couple more tests
* Fix two deprecated methods usages
* Test ToNumber conversions
* Test behavior of all functions when passed 0 or 8 arguments
There are 16 which fail currently on 0 args (return null or
False instead of EvalError), but have been whitelisted until
we can verify whether it's safe to change them without introducing
compatibility issues.
There are 19 which fail to return an error on too many (ie 8) args.