Prefer "complete[name]" field for mapping with tier item; see #121

[cedric-anne]

Preserve only one option per linkfield, as mapping process is based on arrays indexed by linkfield.

This is a hack to handle behaviour explained in issue #121.

From most preferred to less desirable, the option chosen for each linkfield is:
"completename", else "name", else first option found

[loicbenoit]

Tested OK.

The only thing I would change is your comment, for clarity sake.

Original comment

Preserved option is "complename" if existing, or "name" if existing,
or first founded option for each linkfield.

Suggestion

From most preferred to less desirable, the option chosen for each linkfield is:
"completename", else "name", else first option found

[loicbenoit]

Does what it announces.

[cedric-anne]

Thanks for the feedback.