message: Use MainWindow palette for tooltips
diff: #include <QProgressBar>
  #include <QProgressDialog>
  #include <QToolButton>
  +#include <QToolTip>
  #include "Code/CaptureContext.h"
  #include "Code/QRDUtils.h"
  #include "Code/Resources.h"
  @@ -57,6 +58,8 @@ MainWindow::MainWindow(ICaptureContext &ctx) : QMainWindow(NULL), ui(new Ui::Mai
  {
  ui->setupUi(this);
  + QToolTip::setPalette(palette());
  +
  installEventFilter(this);
  setAcceptDrops(true);
  