Removes functionality to
* select PNG rendering mode
* automated fallback to PNG images for SVG rendering
* PNG mode related class and tests
However, PNG images received from mathoid / restbase are still stored.
Bug: T311620
Change-Id: I595926027433182cc0396570bc3f1ce0cd2cafb3
The MathEntitySelector gets its config from wbRepo which caused a hard
dependency on the Wikibase client.
If the Wikibase client config is not available a default value (wikidata)
is used to determine the URL of the foreign repo.
As the dropdown will never do write operations, we restrict the repo
access to anonymous read only.
Bug: T313143
Change-Id: Iba33dfd32a78f4ad7c2e99a1f56218458ab884b4
This is doing a bulk of the job of creating a service
for working with math modes configuration. There's
still things to do, like moving math mode names,
and perhaps depending on default user options to
provide a bit more convenience, but that will be the
next step.
Change-Id: I1259a93651920f44104f2f5135e3e620c858be8d
