Make sorttable_alpha case-insensitive and use stable sort.
The former ensures that we get the same behavior as when the same sorted output is produced using "order by" in mysql. I added a sortable_alpha_cs that we can use for a column should we discover a case where we really want a case-sensitive sort. The latter ensures that a user can at least manually do a multi-column sort (e.g., the equiv of "order by state,eid" when displaying experiments by clicking on the eid column and then on the state column).
Showing with 9 additions and 4 deletions