Patch some changes/fixes from 0.8 branch

Fix Gesior signature double dollar $$
Add some missing <br/> to online page
Use  $config['last_kills_limit'] in lastkills.php
Fix save_ranks.php: getLastError();
Fix PHPMailer autoloader
Fix leaking sensitive informations on MySQL Connection Fail
Add nginx-sample.conf
Change myaac_monsters.loot to text
Add more files to ignore file

tools/validate.php

@@ -1,7 +1,7 @@
 <?php
 /**
  * Ajax validator
- * Returns xml file with result
+ * Returns json with result
  *
  * @package   MyAAC
  * @author    Slawkens <slawkens@gmail.com>