Ideas for improving runtime statistics tab for destinations:

• improve the scale on messages count bars - don't use real numbers if the number of messages is low, give user absolute number of messages (the scale labels sometimes don't go all the way to 100%)
• list how many clients are connected to the destinations, for topics also list subscription IDs and how many messages was consumed per subscription
• list more than 4 destinations in the table or let the user set how many of them she wants to see