Temporarily enable JavaScript when loading qupzilla:restore page

src/lib/app/browserwindow.cpp

@@ -178,6 +178,9 @@ void BrowserWindow::postLaunch()
         if (mApp->isStartingAfterCrash()) {
             addTab = false;
             startUrl.clear();
+            // qupzilla:restore needs JavaScript enabled
+            // correct value is then restored in MainApplication::destroyRestoreManager
+            QWebEngineSettings::defaultSettings()->setAttribute(QWebEngineSettings::JavascriptEnabled, true);
             m_tabWidget->addView(QUrl("falkon:restore"), Qz::NT_CleanSelectedTabAtTheEnd);
         }
         else if ((mApp->afterLaunch() == MainApplication::SelectSession || mApp->afterLaunch() == MainApplication::RestoreSession) && mApp->restoreManager()) {

src/lib/app/mainapplication.cpp

@@ -472,6 +472,10 @@ bool MainApplication::restoreSession(BrowserWindow* window, RestoreData restoreD
 
 void MainApplication::destroyRestoreManager()
 {
+    // Restore JavaScript settings
+    const bool jsEnabled = Settings().value(QSL("Web-Browser-Settings/allowJavaScript"), true).toBool();
+    QWebEngineSettings::defaultSettings()->setAttribute(QWebEngineSettings::JavascriptEnabled, jsEnabled);
+
     delete m_restoreManager;
     m_restoreManager = 0;
 }