make emails lowercase

website/server/controllers/api-v3/hall.js

@@ -479,7 +479,7 @@ api.updateHero = {
       }
 
       if (updateData.auth.local && updateData.auth.local.email) {
-        hero.auth.local.email = updateData.auth.local.email;
+        hero.auth.local.email = updateData.auth.local.email.toLowerCase();
       }
     }
 

website/server/libs/auth/social.js

@@ -33,7 +33,7 @@ export async function socialEmailToLocal (user) {
       { 'auth.local.email': socialEmail },
       { _id: 1 },
     ).exec();
-    if (!conflictingUser) return socialEmail;
+    if (!conflictingUser) return socialEmail.toLowerCase();
   }
   return undefined;
 }