Update guild join flow to be more useful

[alalonde]

What would you like to be added?

• After connecting, button should just say "Join"
• More copy on the intro page explaining why going through Discord is necessary (from peth "better explain why its useful & what we'll be pulling in, currently only mentions announcements"). Currently we only describe why one might want to leave the permission box checked in the Discord flow
• Update final toast message to say something like "Thanks, your Guild will go live shortly!"
• [Optional] On submission, post a message to champion's ring (or wherever appropriate) so someone can go into Hasura to activate the guild

Why is this needed?

People will be manually sent a link to this page after they have already filled out a form and manually approved, so at this point they are pre-vetted and should be able to freely proceed.

However, anyone with the link could still input their data, so a manual approval process still seems useful

[cmaxwe11]

What worked:

1. Discord linking worked, Metagame bot is now a member of the server (what commands should I test with, what is expected to work on a non-Metagame Discord?)
2. Pulled in roles for me to select Admin/Member roles.

I got stuck trying to submit guild info, a contract is required (which I believe should not be, as not all partner orgs will have on-chain DAOs). I tried just submitting a wallet address, and got this error:

[cmaxwe11]

Per feedback from Alec, the default DAO can be removed, and I was able to submit. Consider defaulting to not including the entry?

[Seroxdesign]

Guild flow has been improved VIA multiple PRs