Don't expose Last.fm API Key in the index.html

ui/src/authProvider.js

@@ -21,6 +21,7 @@ function storeAuthenticationInfo(authInfo) {
   localStorage.setItem('role', authInfo.isAdmin ? 'admin' : 'regular')
   localStorage.setItem('subsonic-salt', authInfo.subsonicSalt)
   localStorage.setItem('subsonic-token', authInfo.subsonicToken)
+  localStorage.setItem('lastfm-apikey', authInfo.lastFMApiKey)
   localStorage.setItem('is-authenticated', 'true')
 }
 
@@ -102,6 +103,7 @@ const removeItems = () => {
   localStorage.removeItem('role')
   localStorage.removeItem('subsonic-salt')
   localStorage.removeItem('subsonic-token')
+  localStorage.removeItem('lastfm-apikey')
   localStorage.removeItem('is-authenticated')
 }