title: Disable Jupyter Notebook cell only for whole notebook run
body: <p>I don't know if it is possible, but I have a Jupyter notebook where I'd like to disable some cells in case of a whole run.
  That is, 'Run All' would jump over these cells and not trigger them, but they could still be used if ran alone (e.g. with Ctrl+Enter) without changing the code.</p>
  <p>I know <code>%%script false --no-raise-error</code> does the trick, but you need to manually change a constant to re-enable the cells when you need them. Ideally, I'd not have to change anything in the code.</p>
  <p>Thanks in advance!</p>