Add a config option to set which fields should appear in the address form (and in which sequence)

Currently, the order of the fields in the address input form depends on address format, and all fields not included in the address format are put at the end of the form. This is required, as for example in Poland we don't want to have voivodships (states) in the address format, but we do want to have them in the form. However, a mean to turn off selected address fields should be provided, so people can drop stuff they don't need (the ZIP+4 field, or geo coordinates).

Task: add another configuration setting that governs the order of the fields and which fields appear on the list, and switch CRM_Core_Config::$addressSequence to use it instead of parsing address format.