make mouse over aggregation groups in compact mode show the mysql version and replication "Style"

[sjmudd]

In compact mode you can see the list of instance names with a mouse over the circle representing the types of box (ok, delayed, broken etc). However, this just shows the hostnames. It would be good to add the info you add in orchestrator -c topology output that is perhaps the MySQL version and also if it's in GTID, psuedo-gtid mode etc.

During upgrades it's useful to be able to see this info quickly and once the number of instances needs to be seen in compact mode that doesn't work. The command line can be used (I use that a lot) but often you want a quick look and don't necessarily want to drop down to the shell.