Transition website to 2021 season

[logan-r]

• Remove link to live site
• Add MLH 2021 season banner

Edit - removed:
Clone this repo to hackmcgill/mchacks8 and have it deploy to 2021.mchacks.ca and mchacks.ca

[loreina]

Wouldn't it be easier to just continue using this repo until mchacks8 site is ready? Then we can revert back to mchacks7 last commit.

[logan-r]

Yeah, that's a good idea.

I'll remove the "Clone this repo to hackmcgill/mchacks8 and have it deploy to 2021.mchacks.ca and mchacks.ca" task from this issue

[loreina]

Another option to save us from reverting is to deploy using another branch, say 2021 or something until we have the new site ready and then we can deploy this repo back from master. Slack me if you need help with this :)