feat: Add RubyFloripa group

[wevtimoteo]

Motivation

RubyFloripa is missing in groups page.

Proposed Solution

As including RubyFloripa group I've noticed that template doesn't support groups without Telegram group. So I've updated it to support both site_url, slack and telegram.

• [x] Change group layout to accept Slack and Site URLs
• [x] Add RubyFloripa group
• [x] Add missing details about other groups (such as website and Slack workspaces)

If you want I can break this PR in small ones :)

Note:

• I didn't create a commit with compiled version because I don't know how you're deploying new versions.
• I would recommend reviewing index.html template in Split view

Screenshot

Groups page