Joomla 3.1 should *not* suggest to use "admin" as the default admin username

Joomla should not be recommending using "admin" as the default admin username during installation.  This is giving a known credential which is 50% of the credentials needed for a site and so should be user generated and no default should be recommended. 

I did look at contributing a pull request for this, however as it impacts on the language string INSTL_ADMIN_USER_DESC I gave up as I dont have the ability to translate 

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=30380

![Screen Shot 2013-03-24 at 21 20 14](https://f.cloud.github.com/assets/400092/295966/24a47fde-94c9-11e2-86b5-140fb55a9265.png)