Add ability to manage relays

src/lang/en.js

@@ -313,6 +313,9 @@ export default {
     database: 'Database',
     other: 'Other',
     relays: 'Relays',
+    follow: 'Follow',
+    followRelay: 'Follow new relay',
+    instanceUrl: 'Instance URL',
     success: 'Settings changed successfully!',
     emojiPacks: 'Emoji packs',
     reloadEmoji: 'Reload emoji',