Invite internationalization broken

Hello,

I try to translate the invite plugin and i discover some problems.
Not translated e-mail message, rextdomain problem (wpmudev), some not translatable ui message.
I make patch for this. Please pay attention if apply gettext handle well strings contains \n and may not handle strings \r\n I remove \r-s from e-mail message.
Please apply my patch if possible. Thanks
patch: http://www.dds.hu/patches/wpmu/invite.patch