* Added the ability to import user roster data when using a read-only user store such as LDAP or POP3.
* Added the ability to allow user elements in the import file to be in any order.
* Added a check to make sure that the username is valid.
* Removed an unnecessary check when creating roster items.
* Updated UI to match later versions of Wildfire.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@6859 b35dd754-fafc-0310-a699-88a17e54d16e