GUI-365: Use WTForms validators.DataRequired instead of validators.InputRequired in places where we are displaying read-only values rather than disabled input fields.
GUI-365: Update unit test check for required fields to handle both InputRequired and DataRequired validators.
Merge pull request #155 from eucalyptus/GUI-365

GUI-365: Use WTForms validators.DataRequired instead of validators.InputRequired
Merge branch 'develop' into GUI-325