New list of projects filtered by angle to use in PieChart. Closes #432

Added simple method to SummaryReportView to obtain a list of projects for a minimum angle. Used on Ross and Joey.
fixes #432 
Ok, maybe rename them to something more descriptive? Because PieChartProjects and ListChartProjects are as good as "FooProjects" and "BarProjects" - they convey absolutely zero indication what's in there.

Maybe drop the PieChartProjects and rename ListChartProjecs to CollapsedProjects. That way the   pie chart and the project list can easily deduce which projects to show and also we have just 2 lists of projects (instead of 3 as we have now)?