Have a tone or such when blob core attacked

[Brixx79]

I know it brings up a blurb in chatlogs, but with multi attacks from various directions can put your attention away from the chat screen.  Something a little more noticeable for when one of your cores is under attack would be appreciated.

[LeahTheTech]

https://www.youtube.com/watch?v=v-8hsvddax0
(but yep, good idea!)