Add styled et al. mode in the displayed content settings

[mjthoraval]

I had mentionned this ealier, but I clarify the feature request here.

I would like to add another mode to display the authors: show all first N authors and then show et al.. So something similar to the Creator column, but with a bit more flexibility on the number of first authors to show.

Maybe the Displayed content settings could be simplified with a drop-down menu with the following 3 options:

• All
• Omit intermediate (show First N + ... + Last)
• et al. (show First N + et al.)

Then the First N authors parameter would be the same for the last 2 options (and obviously ignored for the first option). You would just need to make sure that the Last author is still marked correctly in the 3rd option when it is in the First N authors.