[API CHANGE] Adapt css.uri UNOIDL entities to RFC 3986

[Stephan Bergmann]

On 21/08/2019 08:59, Stephan Bergmann wrote:
> If there is no objections over the coming days, I'm going to push this 
> to master soon.

done, 
<https://gerrit.libreoffice.org/plugins/gitiles/core/+/5bbf9ca7ccb60c9d90f2cabbe4be4962329fda61%5E%21> 
"[API CHANGE] Adapt css.uri UNOIDL entities to RFC 3986" (release notes 
at 
<https://wiki.documentfoundation.org/index.php?title=ReleaseNotes/6.4&oldid=189926> 
"css.uri RFC 3986 update")