Use the bundle registry in sugar-install-bundle (when sugar is running)

bin/sugar-install-bundle

@@ -1,4 +1,5 @@
 #!/usr/bin/env python2
+import os
 import sys
 
 from sugar3.bundle.activitybundle import ActivityBundle
@@ -15,7 +16,15 @@ if len(sys.argv) != 2:
     cmd_help()
     sys.exit(2)
 
-bundle = ActivityBundle(sys.argv[1])
-bundle.install()
+if 'SUGAR_PROFILE' in os.environ:
+    # We are in sugar, so use the bundle registry so the correct signals
+    # are sent to the activity list
+    from jarabe.model.bundleregistry import get_registry
+    registry = get_registry()
+    bundle = ActivityBundle(sys.argv[1])
+    registry.install(bundle, force_downgrade=True)
+else:
+    bundle = ActivityBundle(sys.argv[1])
+    bundle.install()
 
 print "%s: '%s' installed." % (sys.argv[0], sys.argv[1])