Show name of journal when creating a password/encrypting

[jonakeys]

This code intends to make it clearer which journal you are trying to encrypt/generate a password for. The original code said 'new journal', but it would be better if the actual name of the journal is shown at the prompt.

I couldn't find an issue number related to this change. And because it only changes the prompt I didn´t write a test for it.

Checklist

• I have read the contributing doc.
• I have included a link to the relevant issue number.
• I have checked to ensure there aren't other open pull requests
  for the same issue.
• I have written new tests for these changes, as needed.

[wren]

Looks good. Thank you!