When grouping alerts display all the affected hosts in the UI
Proposal
When grouping alerts based on fingerprint, display all the affected hosts
in the UI (instead of hosts
of just the first alert).
Ideally, we should also list how many times each host triggered an alert. But this might need the underlying data structure of hosts
to change from an array of strings to either a Hash or array of arrays (first item being host and second item being count) and will be a more involved task.