Change the default global shortcut for --background-mode from F12 to Ctrl+Shift+F12

F12 is too common. Change it to reduce the chance of conflict

src/Application.cpp

@@ -377,7 +377,7 @@ void Application::startBackgroundMode(MainWindow* window)
     KAction* action = window->actionCollection()->addAction("toggle-background-window");
     action->setObjectName(QLatin1String("Konsole Background Mode"));
     action->setText(i18n("Toggle Background Window"));
-    action->setGlobalShortcut(KShortcut(QKeySequence(Qt::Key_F12)));
+    action->setGlobalShortcut(KShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_F12)));
 
     connect(action, SIGNAL(triggered()),
             this, SLOT(toggleBackgroundInstance()));

src/main.cpp

@@ -101,10 +101,9 @@ void fillCommandLineOptions(KCmdLineOptions& options)
     options.add("profile <file>",
                 ki18n("Name of profile to use for new Konsole instance"));
     options.add("list-profiles", ki18n("List the available profiles"));
-    // TODO - Update this when F12 is no longer hard coded
     options.add("background-mode",
                 ki18n("Start Konsole in the background and bring to the front"
-                      " when the F12 key is pressed"));
+                      " when Ctrl+Shift+F12 (by default) is pressed"));
     options.add("new-tab",
                 ki18n("Create a new tab in an existing window rather than"
                       " creating a new window"));