Open functionality to all devs

[wil-gerard]

Currently, the app's functionality is only open to members of the 100Devs, Learn w/ Leon Discord server. Other users could benefit from this app - so I'm thinking of opening the app to all. I'd still like to highlight the 100Devs community and its members - while encouraging other folks to join. Opening the app's functionality would also increase the outreach.

Feature updates:

• The intro page highlights the 100Devs community - but does not explicitly state the app is strictly for 100Devs
• Login through GitHub instead of Discord
• Users can connect their Twitter and Discord accounts on their My Profile page
• Connecting your Discord account checks if a user is a member of the 100Devs Discord server and gets a unique profile tag or user card color

I'd love feedback on this idea!