T5 Options for Filtering Reports

* p. 16 Requirements Doc
* enable Location-Find for Report Filter Map
* eliminate mode/verficiation/status filter
* edited custom fields filter
* TODO: edit reports_js.php -> custom fields filter hardcoded!
* Documentation: http://jengeeks.wordpress.com/gsoc-2014/documentation/#FilteringOptions
* Unit Tests: http://jengeeks.wordpress.com/gsoc-2014/unit-tests/