[zendframework/zf2#1629] Fixed failing tests due to changes in Zend\Registry
[zendframework/zf2#1629] Fixed failing tests due to changes in Zend\Registry

- Fixed all Feed, Date, Session, and Translator tests (implicit
  dependency on Locale meant tests were resetting the Registry)
- Currency had some bad behavior due to poor detection of Locale; fixed
- Removed obsolete references to Registry in a few classes

MadCat34/zend-mvc,svycka/zend-mvc,ezimuel/zend-mvc,ezimuel/zend-mvc,turrsis/zend-mvc,MadCat34/zend-mvc,turrsis/zend-mvc,svycka/zend-mvc