labels sync for kivy

plugins/labels/kivy.py

@@ -1,3 +1,14 @@
 from labels import LabelsPlugin
+from electrum.plugins import hook
+
 class Plugin(LabelsPlugin):
-    pass
+
+    @hook
+    def load_wallet(self, wallet, window):
+        self.window = window
+        self.start_wallet(wallet)
+
+    def on_pulled(self, wallet):
+        self.print_error('on pulled')
+        self.window.update_history_tab()
+