New player run animations and better spacing on the line

These Deck Builder Football clips show the same plays three ways: today's players, an earlier round of the new players, and the latest round. Players now have an 8-frame side run and 6-frame front and back runs. Runners are taller than they are wide, and players stand 2.6 yards tall so the line is not bunched together. Each comparison is shown zoomed in first, then at game size.