Various test suite UI improvements

[jreidgreer]

Just for the sake of convenience, putting in a few things I've noticed that would really elevate the UI's usefulness 😄

1. Ability to filter by score. Especially in large suites this would be very useful.
2. Column sorting
3. Color coding scores (simple red/green, etc.)
4. Quick search. It would be nice if I know I have a problem case, etc. to be able to search the suite and filter the table.
5. Virtual scrolling. On larger suites (mine is 2.7k), the UI can get kinda sluggish.