Core: Remote validation uses wrong error messages
Core: Remote validation uses wrong error messages

Fixes #697. Closes #1028.

Arkni/jquery-validation,MeteorAdminz/jquery-validation,RobJohnston/jquery-validation,jquery-validation/jquery-validation,staabm/jquery-validation,alfonsomartinde/jquery-validation,jzaefferer/jquery-validation,MeteorAdminz/jquery-validation,staabm/jquery-validation,RobJohnston/jquery-validation,alfonsomartinde/jquery-validation,jzaefferer/jquery-validation,jquery-validation/jquery-validation,alfonsomartinde/jquery-validation,Arkni/jquery-validation,jzaefferer/jquery-validation