[TIMOB-13417] iOS: ListView V2 UI enhancements 

PR for [TIMOB-13417](https://jira.appcelerator.org/browse/TIMOB-13417)

Test cases are in [KitchenSink PR](https://github.com/appcelerator-developer-relations/KitchenSink/pull/102)

During FR please also test TableView since some code was refactored that effects tableView.

Please also ensure that you run on device for FR