Move AS event handling from browser to view.

Having event handling in the browser made sense when the approach was to
propogate an event over to the topology, but once we switched to the
database as a single source of truth, this code became very clunky.
Moving it into the view allowed for much cleaner method and should make
debugging much easier as the code is spread across fewer files.
No. One deals with actually changing the highlight flag on the service and the other deals with toggling all the other services to unhighlight. They aren't dependent on each other, as long as they both happen. They're good for async.