context menus, document refactoring, fixes

src/frame_properties.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "document_manager.h"
+#include "manager.h"
 #include "settings.h"
 
 namespace anm2ed::frame_properties
@@ -8,6 +8,6 @@ namespace anm2ed::frame_properties
   class FrameProperties
   {
   public:
-    void update(document_manager::DocumentManager& manager, settings::Settings& settings);
+    void update(manager::Manager&, settings::Settings&);
   };
-}
+}