When rendering a chart, add the page the chart is on to a tracking category.
Open questions:
- What should the name of the tracking category be (in English)?
- Should there be only one tracking category for all pages with charts, or should there be a separate tracking category for each chart type? (or both?)
Acceptance criteria:
- All pages with charts are added to a category
- The name of this category is translatable/customizable through an i18n message