title: Input for key mapping
body: <p>To make my application more flexible to user I want to add possibility user to chose Hot keys for some actions in app.<br>
  To do this I'll gooing to make some page on settings window.<br>
  where Action name and input(QLineEdit) where keys will be desplayd like<br>
  Quit |Alt+Q|<br>
  What was the best way to capture such Hot Keys?<br></p>