Update no data placeholder text

[futa-ikeda]

• Ticket: [No ticket]
• Feature flag: n/a

Purpose

• Update placeholder text when there is no data for a given column

Summary of Changes

• Use a simple - to denote missing values
• Add placeholder text if no contributors are no longer affiliated for a project/registration/preprint

Screenshot(s)

• Example of columns with missing values

• When no affiliated contributors are found (in case a user is no longer is affiliated with an institution)

Side Effects

QA Notes