Provide message with link to past events if there are no ongoing or upcoming meetings

[vivienlacourba]

Describe the issue
The events listing pages are only listing ongoing and upcoming events. If there is no such events, the returned list will be empty.
The user might be confused, it would be helpful to guide him to the list of past events.

Expected behavior
If an event type or category has no upcoming meetings display a message telling so with a link to past events of that type/category.

cc: @jean-gui

[vivienlacourba]

The pre-footer component is missing, see:
https://design-system.w3.org/components/pre-footer.html#event-listing-pre-footer

This is similar to #122

[vivienlacourba]

The pre-footer component is missing, see:
https://design-system.w3.org/components/pre-footer.html#event-listing-pre-footer

This part was implemented.