All the quotation marks must be screened by adding a backslash before them. Otherwise we cannot generate .mo file.

Files are generated using message/extract command.
E.g.: ./yii message/extract message/config.php po

Appended newlines to every PHP document that did not have a newline as the last character in the file.

Refactoring AssetConverter.

I18N WIP.

Finished migrate command.