[gnote] Add signal for popover changes

[Aurimas Černius <aurimasc src gnome org>]

commit 730b08e57198cc7b86d1ede322802d23fe88de72
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sun Mar 24 22:14:03 2019 +0200

    Add signal for popover changes

 src/iactionmanager.hpp | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/iactionmanager.hpp b/src/iactionmanager.hpp
index ae114063..35832351 100644
--- a/src/iactionmanager.hpp
+++ b/src/iactionmanager.hpp
@@ -100,6 +100,7 @@ public:
   virtual std::map<Glib::ustring, sigc::slot<void, const Glib::VariantBase&>> 
get_main_window_search_callbacks() = 0;
   sigc::signal<void> signal_main_window_search_actions_changed;
   sigc::signal<void, std::vector<PopoverWidget>&> signal_build_main_window_search_popover;
+  sigc::signal<void> signal_main_window_popover_changed;
 };
 
 }