FEATURE: Allow to drag 'n drop urls on the main window

TODO

@@ -45,6 +45,7 @@
 * beta3
   - Translations update ( IN PROGESS)
   - Optimize and cleanup code
+  - add asserts to squash remaining bugs
   - Wait for some bug fixes in libtorrent :
     - upload/download limit per torrent
     - double free or corruption on exit
@@ -53,4 +54,4 @@ LANGUAGES UPDATED:
 - French
 - English
 - Japanese
-- Swedish
+- Swedish