fixing current url matching in oxUtilsServer

The URL doesn't match if ```$this->getServerVar('SCRIPT_NAME')``` is set.

I have created a module and overwrite the "oxDynImgGenerator". Then I change the .htaccess like this:
```
RewriteCond %{REQUEST_URI} (\/out\/pictures\/generated\/)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (\.jpe?g|\.gif|\.png|\.svg)$ modules/example/getimg.php
```

In the enterprise version matches the oxbaseshop with shopid "1" everytime because the condition never matches.

So I get a redirect on the "mallshopstart" template.

I think it is a highly privileg hotfix and you should merge it in this version.

Cheers, Robin
This method is used mostly for recognition of urls, does it shops url or external and in some condition near native url we need add some parameters etc. and for urls without http ot https we think that is our native system url; with your changes it will work totally opposite and brakes shop. i do not check other stuff, because i thought that it's not make sense, because all stuff probably is related.