New: Added support for CPTimeZone and CPDateFormatter

- Added support for CPDateFormatter in Foundation
- Added support for CPTimeZone in Foundation
- Added support for CPDateFormatter in nib2cib
- Added support for CPTimeZone in CPDateFormatter and CPDatePicker

Test app in Tests/Manual/CPDateFormatter
Test app in Tests/Manual/CPTimeZone
UnitTest in Tests/Foundation/CPTimeZoneTest.j
UnitTest in Tests/Foundation/CPDateFormatterTest.j