Community Launch

## Graphics (Taiyab to make, Jeremy to add)
- [ ] Favicon for forum
- [ ] YouTube thumbnail frame for community stories (Something that says the name of the person and has their face and some static frame. Look at high performing vlog-style YouTube channels for inspiration.

## Launching

- [x] Add site banner
- [ ] Record video
- [x] Add site modal
- [ ] Add video to site modal and merge https://github.com/exercism/website/pull/3077
- [ ] Create newsletter
- [ ] Send newsletter
- [ ] Update docs to sub Slack for Forum
- [ ] Check org for mentions of Slack

## Community Page
- [x] If there are no "other stories", the UI looks a bit weird, but we shouldn't ever be in that situation once the blog was merged
- [x] Merging the exercism/blog PR for the stories
- [x] Statically link to forum posts
- [x] I think Aron was in the process of changing the story youtube link to a modal, but that doesn't yet work. You might want to convert to an external link
- [x] I've also not yet been able to test the rendering of the transcript on the story page
- [ ] also didn't see any rendering of story thumbnail images, nor of story (main) images (the one on the RHS on the details page)
- [ ] I've not yet added the caching. For that I'd needed to convert the code to a ViewComponent I think to move the loading from the controller to the ViewComponent, as otherwise the data would still be fetched
- [x] Some copy might need changing. We still have "Stop looking shit. Buy our shit."
- [x] Also, the background for the swag section isn't great IMHO

## Approaches
- [ ] Fix header of individual
- [ ] Add forum prompt to unlock
- [ ] Merge unlock button PR

## Swag

- [x] Remove the password

## Forum

### Content
- [x] Update https://forum.exercism.org/admin/customize/site_texts/guidelines_topic.body?locale=en
- [ ] Update https://forum.exercism.org/admin/customize/site_texts/discourse_narrative_bot.new_user_narrative.hello.message?locale=en
- [ ] Create 30 topics.

### SSO
- [x] Handle redirect flow if someone needs to sign up / log in
- [x] Set TOKEN for SSO
- [x] Update secret and merge PR
- [x] Update URL on forum.exercism.org
- [x] Check existing users are correct.

### Misc
- [x] Remove Slack signup code from mentoring flow