Update sites.json

line 320: typo corrected ("note": -> "notes":) Notes for DHL are shown now.
line 407: added german translation for eBay.
line 417: added german translation for EdX.
line 540: added german translation for Freenode.
line 576: added german translation for Gawker (Gawker Media).
line 586: added german translation for Geni.
line 618: added german translation for Gizmodo (Gawker Media).
line 628: added german translation for Glassboard.
line 631: added email for Glassboard as described in the delete-link.
line 699: added german translation for GoSquared.
line 715: added german translation for Grindr.

(changes validated via pro.jsonlint.com 03.09.2013 6:31 pm GMT+1)