Mime type settings: Restore user changes

Change-Id: I6c83989113de3beb5d27eb7c39b5c9e825b541e8
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>

src/plugins/coreplugin/mainwindow.cpp

@@ -331,6 +331,7 @@ bool MainWindow::init(QString *errorMessage)
 
 void MainWindow::extensionsInitialized()
 {
+    MimeTypeSettings::restoreSettings();
     m_windowSupport = new WindowSupport(this, Context("Core.MainWindow"));
     m_windowSupport->setCloseActionEnabled(false);
     m_statusBarManager->extensionsInitalized();