[gnote] Make statistics plugin update popover on enable/disable

[Aurimas Černius <aurimasc src gnome org>]

commit 3cd6901f4abc7171ab721bb8b1129f9234d6f31b
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sun Mar 24 22:16:03 2019 +0200

    Make statistics plugin update popover on enable/disable

 src/addins/statistics/statisticsapplicationaddin.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/addins/statistics/statisticsapplicationaddin.cpp 
b/src/addins/statistics/statisticsapplicationaddin.cpp
index 72a63eab..7eb528cc 100644
--- a/src/addins/statistics/statisticsapplicationaddin.cpp
+++ b/src/addins/statistics/statisticsapplicationaddin.cpp
@@ -50,13 +50,16 @@ void StatisticsApplicationAddin::initialize()
       "statistics-show", sigc::mem_fun(*this, &StatisticsApplicationAddin::on_show_statistics));
     m_add_menu_item_cid = manager.signal_build_main_window_search_popover
       .connect(sigc::mem_fun(*this, &StatisticsApplicationAddin::add_menu_item));
+    manager.signal_main_window_popover_changed();
   }
 }
 
 void StatisticsApplicationAddin::shutdown()
 {
-  gnote::IActionManager::obj().unregister_main_window_search_callback("statistics-show-cback");
+  auto & manager(gnote::IActionManager::obj());
+  manager.unregister_main_window_search_callback("statistics-show-cback");
   m_add_menu_item_cid.disconnect();
+  manager.signal_main_window_popover_changed();
   m_initialized = false;
 }