Batch Create 1.1 Beta

Hey guys!

Here is a beta version of Batch Create 1.1 with new features and enhancements. Feel free to try it and let us know how it works for you.

Changelog:
- New feature: allows addition of users to existing blogs
- New feature: allows choosing the role of users
- Enhancement: support for .csv and .xls files
- Enhancement: internationalization
- Enhancement: compatibility with WordPress 2.8 - 3.1
- Enhancement: log plugin actions in a file when queue is processed
- Enhancement: admin page rewrite so that it works correctly without js enabled
- Enhancement: rewrite code per our coding standards