Live Data filter value suggestions don't work when the class contains spaces

Steps to reproduce:

1. Create a new AWM application with a space in the name
2. Add a static list property (you can keep the default settings)
3. In the final screen of the wizard, add the property to the columns to display
4. Append ?useLiveData=true to the URL
5. Open the select for the static list property

Expected result:

The configured values are displayed so they can be selected.

Actual result:

No values are displayed.

This is because the request to the URL /xwiki/rest/wikis/xwiki/classes/Demo+With+Spaces.Code.Demo+With+SpacesClass/properties/staticList1/values?fp=f&limit=10 fails. Replacing + by %20 works. The problematic code that generates these + values is here in LiveTableLiveDataPropertyStore. The URLs are the same as in 15.10.x, what caused this is most likely the switch to Jersey in XWIKI-12674.