Set correct focus in the "rename tab" dialog.

Currently, the OK button has the focus upon startup. After patch, the
user doesn't need to remember if they need to adjust the remote or
local title.

Patch by Sebastian Kühn

http://git.reviewboard.kde.org/r/100642/

src/SessionController.cpp

@@ -550,6 +550,12 @@ void SessionController::renameSession()
     dialog->setTabTitleText(_session->tabTitleFormat(Session::LocalTabTitle));
     dialog->setRemoteTabTitleText(_session->tabTitleFormat(Session::RemoteTabTitle));
 
+    if (!_session->isRemote()) {
+        dialog->focusTabTitleText();
+    } else {
+        dialog->focusRemoteTabTitleText();
+    }
+
     QPointer<Session> guard(_session);
     int result = dialog->exec();
     if (!guard)