Enhanced checklist settings

[drpaulralph]

In the author checklist, the author can select page, line or section numbers. The author should also be able to select a simpler "yes/no" interface (which is going to look different from the line # or n/a interface. I don't know what this should look like yet.

Looking forward, we want the same thing in the reviewer checklists, where the reviewer (or later, the editor) would be able to configure it as yes/no or line numbers or whatever.