Include more information in recent queries

Currently it only shows the name if it's a template, saved list or saved query, and otherwise *Custom Query* (when created with the querybuilder) along with the timestamp it was run.

If you end up creating many queries with the querybuilder, you will have a lot of *Custom Query* entries with no way to distinguish them. We could include extra information, maybe similarly to how it's displayed under the recent queries tab on the querybuilder page.

Edit: Suggestions for extra information:
- number of results
- root class (and maybe all classes involved)

Start with the recent queries view and the querybuilder's recent queries tab, the entry points identified in the issue. Define which extra information should distinguish Custom Query entries, then verify that those entries show the selected information alongside their timestamps.

Written by the indexing model from the issue text.