Added notes about 'navigation' and 'internationalization' view helpers
Added notes about 'navigation' and 'internationalization' view helpers

akrabat/zf2-documentation,akrabat/zf2-documentation,rettal/zf2-documentation,samsonasik/zf2-documentation,Rud5G/zf2-documentation,gennadiylitvinyuk/zf2-documentation,samsonasik/zf2-documentation,Rud5G/zf2-documentation,gennadiylitvinyuk/zf2-documentation,rettal/zf2-documentation