Merge branch 'rs-application-form-messages' into 'master'

Make the "New Application" form's error messages visible

Prior, if you submit the form without values the error text and the form fields were white-on-white:

![Screen_Shot_2015-04-01_at_8.25.56_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/17eb44e65fc9c5ddd4a529e3927cd9b6/Screen_Shot_2015-04-01_at_8.25.56_PM.png)

After:

![Screen_Shot_2015-04-06_at_10.13.07_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/be53d6971ec1c34f415e75a0307b6577/Screen_Shot_2015-04-06_at_10.13.07_PM.png)

See merge request !1752