implemented round end results information (see #72, #19)

still incomplete
added brick/ball information to round results

see #72
Merge branch 'master' into round-ending-and-scoring
reduced minimum timeout in admin UI

see #21
added remaining time to round results, fixed ball/brick count bug

see #72
added player modifier counts

see #72
fixed player modifier counts and added them to round results

see #72
end round when no balls are present

see #19
note that this will be different if balls respawn
implemented ball respawning
added ball spawned event with animation
Merge branch 'round-ending-and-scoring'