Improvements to the Usage Statistics page and graphs

[mariapraetzellis]

The current Usage Statistics page layout is not intuitive and it is not obvious that the filter is not connected to the graphs below.

We propose that the filter lets the admin define settings which are then visualized in graphs, with possibility to click through to get more information / interrogate the underlying data.

This involves:

1. linking the filter and graphics below
2. Remove the "Topic" from the filter. Users will then only be able to select a date span.
3. Investigate JS library through which charts are created to see if we can offer a click through experience to investigate the underlying data

This issue builds on #1678.

[sjDCC]

@xsrust explained that graphs are generated before based on monthly data so not possible to visualise for smaller chunks of time

[sjDCC]

Agreed actions on 31/03 call to usage dashboard page

• remove filter as stats are gathered monthly
• try to give a click though from graph to user / plans page (investigate javascript library

Large effort - 2-3 day estimate

[mariapraetzellis]

We will break out filter to the user / plans page tables & click through to separate tickets

[sjDCC]

Filter removed which was main work left in this ticket so closing out