Problem: There is a problem with the "Submitter"'s page when the database is too large.  The pagination is slow and inefficient.

Solution: Add additional pagination by letter on the top of the table. (As per the wireframe)

Steps:
1. Create links in the table that would reflect the sorting order (ie leading letter)
2. Take the data from the link clicked and sort the queryset of the submitters by the leading letter