Footer: add chat as a support channel

In the footer, please add 'Public chat' below the 'email support' text in the 'Get help' column.
Here is the link: https://chat.collective68.tech/cloud68/channels/town-square

Since the 'Get Help' column has more text than the other two columns that are in the middle, please put it next to 'About us' column. In a few words the line should be like this: 'About Cloud68' (rename), 'Get help', 'Resources', 'Navigate'. Thanks