Make Help view no longer appear in View menu

include/views/view.hpp

@@ -52,6 +52,8 @@ namespace hex {
             ImGui::OpenPopup("Error");
         }
 
+        virtual bool hasViewMenuItemEntry() { return true; }
+
         bool& getWindowOpenState() {
             return this->m_windowOpen;
         }

include/views/view_help.hpp

@@ -22,6 +22,8 @@ namespace hex {
         void createView() override;
         void createMenu() override;
 
+        bool hasViewMenuItemEntry() override { return false; }
+
     private:
         bool m_aboutWindowOpen = false;
         bool m_patternHelpWindowOpen = false;