New Translations and minor translation Fixes

• Translations added for: vietnamese (vi)
• Translations fixes for: czech (cs), German (de) and Ukranian (uk)

Fixed Ukrainian translations bug.

Fixed Ukrainian translations bug.

1.5.2

Corrected Serbian translations file.
Symfony 3 support.

new translations

new translations

1.5.0

1.5.0

1.4.0

1.4.0

long term support for whole symfony 2.* branch

• support 2.* symfony versions
• add Czech translation
• update Russian translation
• add Japanese translation

symfony 2.3 support

Merge pull request #48 from kukulili-labs/master

Add symfony 2.3 support