increase browser start and stop timeouts, since sometimes we strand browser processes after starting them, when the machine is very busy
increase browser start and stop timeouts, since sometimes we strand browser processes after starting them, when the machine is very busy

nlevitt/brozzler,internetarchive/umbra,internetarchive/brozzler,nlevitt/brozzler,internetarchive/brozzler,internetarchive/brozzler,vonrosen/umbra,internetarchive/brozzler,nlevitt/brozzler,nlevitt/brozzler,vonrosen/umbra,nlevitt/brozzler