GMenu: Update apps now that you can create a nameless GMenu

We had many context menus with names, simply because you were forced
to give them names.

Applications/PaintBrush/EraseTool.cpp

@@ -48,7 +48,7 @@ void EraseTool::on_mousemove(GMouseEvent& event)
 void EraseTool::on_contextmenu(GContextMenuEvent& event)
 {
     if (!m_context_menu) {
-        m_context_menu = make<GMenu>("EraseTool Context Menu");
+        m_context_menu = make<GMenu>();
         m_context_menu->add_action(GAction::create("1", [this](auto&) {
             m_thickness = 1;
         }));

Applications/PaintBrush/PenTool.cpp

@@ -50,7 +50,7 @@ void PenTool::on_mousemove(GMouseEvent& event)
 void PenTool::on_contextmenu(GContextMenuEvent& event)
 {
     if (!m_context_menu) {
-        m_context_menu = make<GMenu>("PenTool Context Menu");
+        m_context_menu = make<GMenu>();
         m_context_menu->add_action(GAction::create("1", [this](auto&) {
             m_thickness = 1;
         }));

Applications/PaintBrush/SprayTool.cpp

@@ -75,7 +75,7 @@ void SprayTool::on_mouseup(GMouseEvent&)
 void SprayTool::on_contextmenu(GContextMenuEvent& event)
 {
     if (!m_context_menu) {
-        m_context_menu = make<GMenu>("SprayTool Context Menu");
+        m_context_menu = make<GMenu>();
         m_context_menu->add_action(GAction::create("1", [this](auto&) {
             m_thickness = 1;
         }));

Applications/SystemMonitor/main.cpp

@@ -151,7 +151,7 @@ int main(int argc, char** argv)
     process_menu->add_action(continue_action);
     menubar->add_menu(move(process_menu));
 
-    auto process_context_menu = make<GMenu>("Process context menu");
+    auto process_context_menu = make<GMenu>();
     process_context_menu->add_action(kill_action);
     process_context_menu->add_action(stop_action);
     process_context_menu->add_action(continue_action);

DevTools/VisualBuilder/VBForm.cpp

@@ -26,7 +26,7 @@ VBForm::VBForm(const String& name, GWidget* parent)
     set_background_color(Color::WarmGray);
     set_greedy_for_hits(true);
 
-    m_context_menu = make<GMenu>("Context menu");
+    m_context_menu = make<GMenu>();
     m_context_menu->add_action(GAction::create("Move to front", [this](auto&) {
         if (auto* widget = single_selected_widget())
             widget->gwidget()->move_to_front();

Libraries/LibGUI/GTableView.cpp

@@ -489,7 +489,7 @@ GMenu& GTableView::ensure_header_context_menu()
     //        or if the column count/names change.
     if (!m_header_context_menu) {
         ASSERT(model());
-        m_header_context_menu = make<GMenu>("");
+        m_header_context_menu = make<GMenu>();
 
         for (int column = 0; column < model()->column_count(); ++column) {
             auto& column_data = this->column_data(column);

Libraries/LibGUI/GTextEditor.cpp

@@ -1203,7 +1203,7 @@ void GTextEditor::did_update_selection()
 void GTextEditor::context_menu_event(GContextMenuEvent& event)
 {
     if (!m_context_menu) {
-        m_context_menu = make<GMenu>("GTextEditor context menu");
+        m_context_menu = make<GMenu>();
         m_context_menu->add_action(undo_action());
         m_context_menu->add_action(redo_action());
         m_context_menu->add_separator();