Move the original PHP site into legacy/

The PHP sources, templates and old jQuery-based scripts move unchanged into
legacy/ for reference. Shared assets (media/, images/, favicon.ico, the
default avatar) stay at the repository root.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

legacy/runfav.php

@@ -0,0 +1,12 @@
+<?php
+header("Content-type: text/html; charset=UTF-8");
+require_once( 'lib/config.php' );
+require_once( 'lib/db.php' );
+
+
+for ($i=1; $i<=500; $i++)
+  {
+  	DB::query("INSERT INTO pl_invites (code,owner,used,usedby) VALUES (MD5(RAND()),:1,:2,:3)",$i,0,0);
+  }
+
+?>