User story:
As a Wikidata editor using the Special:MergeItems tool,

• I want to be able to view all merge conflicts in a single view rather than having to resolve conflicts one at a time.
• This will allow me to more efficiently merge items with differing descriptions in the same language,
• as I will be able to see all conflicts at once and easily identify the language by its full name rather than just the code.

Problem:
Currently, the Special:MergeItems tool only displays one merge conflict at a time.

Impact on users:
I have to figure out what the name of the language is, delete the description, try to merge and find the next language that has a conflict.

Solution:
Implement a feature in Special:MergeItems to display multiple merge conflicts simultaneously, including the full name of the language in question.

Acceptance criteria:

• Special:MergeItems displays multiple merge conflicts at once
• Full name of language is displayed (not just the code)

See previous discussion:
Wikidata:Report a technical problem#Show multiple merge conflicts when merging