Added a column to grade title:string. Loaded up the student grade and score variables on grades controller
Fixed some seed stuff so that names are saved
Changed has and belongs to many association to scores and comments
Nested form for grades with hidden field that fills value of grade title
Form displays scheme template  with each category and a number field for the score. Each category displays its comments below it.
Added funcitonality in grades controller to build dynamic number of scores based on the number of categories in the given eval. Form then loobs through each one and renders separate fields for each.
Scheme form is done jsut needs to be styled. Need update actions etc on controller
Merge branch 'grade-form'