Move Redis connection to db.php and change shorten icon.

Since I will be using Redis from multiple files, the connection to the server should be in the same file as the other DB connection.
This icon looks a little bit better I think.

Website/Include/PHP/db.php

@@ -1,4 +1,7 @@
 <?php
 	$shortdb = new mysqli('localhost', 'short', 'password', 'short'); // Connect to link shortener DB
   	if($shortdb->connect_errno > 0) die('Unable to connect to database [' . $shortdb->connect_error . '] - Check dbsettings.php');
-?>
+
+	$redis = new Redis();
+	$redis->connect('127.0.0.1', 6379);
+?>