[zendframework/zf2#1890] CS fixes
[zendframework/zf2#1890] CS fixes

- interfaces are only part of class declaration that should go on
  separate line
- one interface per line

zendframework/zend-i18n,Maks3w/zend-i18n,MadCat34/zend-i18n,mlocati/zendframework2-i18n-v3