Final updates and tweaks in preparation for MVP launch

- Removed unused items from the footer
- Fixed language files to cover all variants of English
- Added Google Analytics tracking code

www/plugins/jasonwilliams/feed/lang/en/lang.php

@@ -0,0 +1,6 @@
+<?php return [
+    'plugin' => [
+        'name' => 'Social Feed',
+        'description' => 'Captures social media posts from a variety of services and consolidates them into a single feed.'
+    ]
+];