Sort movies. Hw2, part 1

Sort movies on title or release date. Fix column headers in table to
reflect which column is sorted.
Fixed so links have appropriate ids
first part of filtering by rating

getting unique ratings and building the form
ratings form remembers sort order

now the ratings form passes the sort order back to the controller.
Now sort column remembers ratings setttins
initially set all checkboxes to checked
initial coding for part3
first try submission for part 3
fix redirect