Active promotion of community initiatives

[thibaudcolas]

Part of recommendations from user research report in #1496

The report says:

Actively promote community initiatives through the website, keeping the page updated on events and initiatives.

Related:

• Cannot add feeds to Django Community Blog #1137
• Django Community: New/updated Django packages feed ingestion is broken #1299

[brainwane]

I'm not sure whether this counts as a "community initiative" but I would appreciate if there were a listing on the website of current DSF Working Groups, to help potential volunteers discover that opportunity to help.