Add per table view rolled up by tablet server to monitor

[keith-turner]

Is your feature request related to a problem? Please describe.

When in the Accumulo tables view in the 4.0 accumulo monitor and a specific Accumulo table is clicked on it goes to a page that has two html tables. One html table shows high level stats for the entire Accumulo table. A second html table shows per tablet information. In the 2.1 monitor a similar page shows rolled up information by tablet server.

Describe the solution you'd like

It would be useful to have a view of an Accumulo table rolled up by tablet server. This would allow finding tablets servers with much less tablets by sorting.

This view could be presented in addition to the per tablet view, but unsure of the best way to structure this overall in the UI.

Each row for a tablet server in this new view would roll up the information for each of the a Accumulo tables tablets on the tsever. For now this view would not be able to include metrics because the metrics are not tagged per Accumulo table.

Used html table and Accumulo table terminology since this references both.