Comment 1 for bug 1526185

Bill Erickson and I have a collab branch here that resolves this:
http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/collab/khuckins/lp1526185-permission-credentials-prompt

Evergreen should now notice whenever an action fails due to permission failure, and the recently implemented operator change dialog will be brought up(without the login type field), along with a message as to what permission failed, and a human-readable message summarising the issue. Input of authorized credentials will log you in as the authorized user, re-attempt the action, and then return you to your user.