* MySQL query optimizing to reduce memory consumption. Thanks to [SebastiaanO](http://wordpress.org/support/topic/allowed-memory-size-exhausted-fixed).
* Extra WordPress nonce field was removed from the post at main role editor page to exclude nonce duplication.
* Minor code enhancements.
* Fixes for some missed translations.

git-svn-id: https://plugins.svn.wordpress.org/user-role-editor/trunk@931548 b8457f37-d9ea-0310-8a92-e5e31aec5664