Initial support for showing help in external window.

Task-number: QTCREATORBUG-1473

src/plugins/help/generalsettingspage.h

@@ -37,6 +37,7 @@ namespace Help {
 namespace Internal {
 
 class CentralWidget;
+class LocalHelpManager;
 
 class GeneralSettingsPage : public Core::IOptionsPage
 {
@@ -56,8 +57,11 @@ public:
     void finish() {}
     virtual bool matches(const QString &s) const;
 
+    void setHelpManager(LocalHelpManager *manager);
+
 signals:
     void fontChanged();
+    void contextHelpOptionChanged();
 
 private slots:
     void setCurrentPage();
@@ -77,9 +81,12 @@ private:
     QFontDatabase m_fontDatabase;
 
     QString m_homePage;
+    int m_contextOption;
 
     QString m_searchKeywords;
     Ui::GeneralSettingsPage m_ui;
+
+    LocalHelpManager *m_helpManager;
 };
 
     }   // Internal