On reports selecting many many artifacts, charts from plugin Graph on Trackers v5 can take a long time to load. For all graphs drawn with D3, the data they need to render is fetched by the server and "injected" via a Javascript "snippet" (an inline script tag).

Changing this mechanism would let users access pages with graphs much faster.
For example, if a project has set up its main dashboard with charts showing a report with many artifacts, every user accessing the project (just clicking on its name) will see a very slow page.

We should instead load all this data asynchronously to have a much faster "First paint time". Users that want to see the charts would however still have to wait for the charts to load their data and render.