gibberish slck (Issue #241) and a better meta contact list ordering policy (Issue #316)

make sure we unregister all installed accounts when we uninstall the corresponding gibberish bundle

src/net/java/sip/communicator/impl/protocol/gibberish/GibberishActivator.java

@@ -110,6 +110,8 @@ public static BundleContext getBundleContext()
     public void stop(BundleContext context)
         throws Exception
     {
+        this.gibberishProviderFactory.stop();
+        gibberishPpFactoryServReg.unregister();
         logger.info("Gibberish protocol implementation [STOPPED].");
     }
 }