[web] When  is > 0, cluster view is supposed to show up to  graphs. This previously didn't work with reports, since they don't have current values to display. This commit fixes that for metric reports by showing N/A for hosts that have been cropped off. If metric columns () is set to 0, the  option is ignored.
[web] When  is > 0, cluster view is supposed to show up to  graphs.
This previously didn't work with reports, since they don't have current values to display.
This commit fixes that for metric reports by showing N/A for hosts that have been cropped
off. If metric columns () is set to 0, the  option is ignored.

akkakks/ganglia-web,torkelsson/ganglia-web,ganglia/ganglia-web,luckypoem/ganglia-web,torkelsson/ganglia-web,ganglia/ganglia-web,luckypoem/ganglia-web,torkelsson/ganglia-web,akkakks/ganglia-web,ganglia/ganglia-web,akkakks/ganglia-web,ganglia/ganglia-web,akkakks/ganglia-web,luckypoem/ganglia-web,torkelsson/ganglia-web,luckypoem/ganglia-web,luckypoem/ganglia-web,torkelsson/ganglia-web,ganglia/ganglia-web,akkakks/ganglia-web