v3.1.0

Speedup: search index updates as background tasks

With this release, adding or updating objects from the web interface should feel much snappier, as the search index update is now done in a background task after the request has returned, rather than blocking the request. This should be particularly noticable when semantic search is enabled.

Improved alternative place names in place profile

@cajturner improved the place profile by adding alternate place names including their dates. This will be the basis of displaying and editing alternative place names in Gramps Web.