Make search results sortable

[alexgarel]

Problem

Currently when you do a search, you can't sort entries

Proposed solution

• Propose a search sort parameter in API
• Add a widget for search

Fields to sort upon:

• the entry id (asc / desc)
• the entry name in a given language (asc / desc) - use currently languages selected for display
• the modification time (asc / desc)

Additional context

See models/search_models.py for the search implementation.

This would be important to integrate smartly with it.