Smartqueue language Drupal 7 port

Changing title for dashboard overview

Hi

Here is a very quick and basic Drupal 7 port of the smartqueue language module

Greets

TimLeytens

Patch #2 works. Could use a little improvement here and there, but essentially it works.

Suggestions for improvement:
- after creating a language queue, you don't immediately see the subqueue until you Queue a first node;
- for some reason, the autocomplete box to add nodes to a queue seems to give the same results regardless of what you query (not sure if related to this extension);

But like I said, it's good to go for an initial D7 release.