Fix login to Gallery 2.2.

This was a very annoying bug to track down but it essentially relates to a bug in the generation of Cookies in Gallery 2.2.

Gallery actually generates 3 Set-Cookie headers in it's response which seems excessive. The first one is a GALLERYSID=<blank> and the other two set it to the correct value. The routine that parses cookies is somewhat dumb and just passes any cookies it receives back to the server on the next request. By passing the blank GALLERYSID, Gallery ensured that it did not connect to your logged in session.

The cookie parsing code should be make more intellegent, but in the mean time I've put in a very simple fix.

Testing and feedback appreciated.

This also applies the patch by Martin Kaufmann - thanks.