adds a button to data ui that increments counter
	modified:   app/src/bubblepop_client/behavior.clj
adds a service that simulates other users' counters
	modified:   app/src/bubblepop_client/behavior.clj
	new file:   app/src/bubblepop_client/simulated/services.cljs
	modified:   app/src/bubblepop_client/simulated/start.cljs