Dashlet - Charts

https://projects.invisionapp.com/d/main#/console/9877377/211046145/preview
A/C:

1. Three charts (Ongoing Cases, Cases Closed, Average Duration) need to be created and grouped inside the Case summary dashlet on Case Dashboard
2. Open Cases chart: A donut chart shows number of ongoing cases
   1. case type as options beside the donut that can be selected/ unselected individually
   2. the donut as well as the total count inside should reflect the selected case types
   3. a view all in caselist link is shown on top of the chart. Clicking on it will take the user to caselist with all ongoing cases listed
3. Cases Closed chart: A donut chart shows number of closed cases
   1. case type as options beside the donut that can be selected/ unselected individually
   2. the donut as well as the total count inside should reflect the selected case types
   3. a relative date filter is shown on top of the chart that allows you to select the time range you want to show in the chart
4. Average Duration chart: A horizontal bar chart shows the average duration of cases of each type
   1. show one bar per case type showing the length as the average duration of the closed cases of the type
   2. a relative date filter is shown on top of the chart that allows you to select the time range you want to show in the chart
   3. Hover over any bar will show a tooltip with text describing the average length