enh: new version of the rating widget

Changes with this PR:

- Updates Bootstrapjs to version 5.0.2
- Updates jQuery to version 3.6.0
- Updates some components of bootstrap for the new version
- Convert the rating widget into a range slider allowing interval
  ratings.
- Reduce the space the widget takes with an accordion
- Make the rating widget invisible at the start
- Add a field for comments and a slider for rater confidence
- Add a timer, which is also reported within the JSON object.

Resolves: #1007.
Resolves: #1008.