JabRef 5.3: Missing translations

[mlep]

JabRef 5.3--2021-06-27--aa60dd6
Linux 4.19.0-17-amd64 amd64
Java 16.0.1
JavaFX 16+8

• Mandatory: I have tested the latest development version from http://builds.jabref.org/main and the problem persists

This issue aims at reporting the strings that cannot be translated in JabRef 5.3 alpha (i.e. before release).
Please, cross the box when solved.

• Enable field formatters (in Quality -> Cleanup entries and in Library -> Library properties)
• Overwrite existing field values (in Edit -> Manage field names & content)
• Recommended (in Library -> New entry)
• Others (in Library -> New entry)
• Field names (in Options -> Manage content selectors)
• Keywords (in Options -> Manage content selectors)
• Entry types (in Options -> Customize entry types)
• Entry type (in Options -> Customize entry types)