Add a user search function

[humdingerb]

At the moment it's a bit time consuming to find a specific user to grant permission for a language. Most of the time, this is done soon after the user registered, so he'll be on the last page. If you have to find someone to add an additional language, however, you'll have to start searching from page one onwards... :)

Instead of a search function, maybe even better: a text field for each column on the "Users" page to filter that column. That way you could also search for email or language permissions.

[humdingerb]

Thanks! That'll save me an hour over the year... :)