chore: remove unused import, not use array index in key

Author: kemuru

web/src/components/CasesDisplay/index.tsx

@@ -1,7 +1,7 @@
 import React from "react";
 import styled from "styled-components";
 
-import { Link, useLocation } from "react-router-dom";
+import { useLocation } from "react-router-dom";
 
 import ArrowIcon from "svgs/icons/arrow.svg";
 

web/src/layout/Footer/index.tsx

@@ -61,7 +61,7 @@ const SecuredByKleros: React.FC = () => (
 const SocialMedia = () => (
   <StyledSocialMedia>
     {Object.values(socialmedia).map((site, i) => (
-      <ExternalLink key={i} to={site.url} target="_blank" rel="noreferrer">
+      <ExternalLink key={site.url} to={site.url} target="_blank" rel="noreferrer">
         <LightButton Icon={site.icon} text="" />
       </ExternalLink>
     ))}