Need to be able to view multiple charts simultaneously in the chart area

User would like to see multiple XYplots from the same data displayed at the same time. One example will be to display different color-color plots using all 4 bands data from WISE catalog.
It is also possible we want to display histogram data at the same time as color-color plots.

Nov. 1, 2016 Implementation notes:

• Refactored charts display: ChartPanel.jsx is displaying various chart types, each type defines it's own Chart, Options, and Toolbar
• ChartsTableViewPanel.jsx is completely replaced by ChartPanel.jsx and chartTypes/* components
• MultiChartViewer shows multiple charts in a way similar to MultiImageViewer. An active chart toolbar is displayed on the top, active chart has an orange border.
• Delete button now shows up in the top right corner of the chart area.