Add action link to rename file

Here's a patch that adds a field handler to display a link to the rename form.

Thanks @greenSkin for your idea and your patch!
But I think it's much better to have rename link in action links directly. I just added some new code to *.module file, which provides a "rename" operation with permission check.

Added a patch, have not so much time to test if there is no mistakes, so will leave the status as it is, needs review. I hope it will be tested and moved to RTBC soon.

Just pushed to dev version.

Automatically closed - issue fixed for 2 weeks with no activity.