Adjust buttons on dark mode on select server

[quead]

• On EDR Server List (dark mode) there is an transparency issue with discord servers buttons. Light mode remain unaffected.
• On mobile & tablet (below 1023px) I've fixed the positions (for discord servers buttons) as it was overflowing.
• On footer was missing space below (desktop and mobile), left and right (on mobile)
• Running the project also was complaining about @mui/material and i18next didn't exist in node_modules so I've added in package.json

Before the fixes

Dark Mode (issue)

Light Mode (unaffected)

Mobile (issue)

Footer (issue)

After the fixes

Dark Mode (fixed)

Light Mode (unaffected)

Mobile (fixed)

Footer (fixed)