form layout changed, error class added to required fields

This includes fix for #126, #169

![form_layout_change_with_validation](https://f.cloud.github.com/assets/929753/2098869/1d150b74-8f34-11e3-822c-82fd9a6e6abf.png)


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*Rajeswari*
*midnight foxes of [@spritle-dev-team](https://github.com/orgs/spritlesoftware/teams/spritle-dev-team)*