include middle names where available

[phette23]

Koha added a middle_name field in 22.11 and it looks like we have middle names in the WD JSON export for some employees and students, though not all. So we can add a simple conditional check and populate that field if we have it.

Pronouns were also added in 22.11 but info does not appear in the JSON export.

[phette23]

Middle names are included in the main user profile menu in the upper right, which takes up a lot of space for a name that isn't always necessary. For now, we will not populate these names, but it is left as an input that staff or users can provide if it's important.