Streamline LaTeX usage

[fneumann]

Feature Request:
https://docu.ilias.de/go/wiki/wpage_5614_1357

Description:
https://github.com/fneumann/ILIAS/blob/dev10-streamline-latex/components/ILIAS/UI/docs/mathjax.md

A review would be needed for components with the major changes:

• alex40724 for COPage, Glossary, LearningModule, Repository, Survey, Wiki
• klees or thibsy for UI
• mjansenDatabay for Forum, Init, RTE
• mbecker-databay, thojou or kergomard for T&A

Since changes in Accordion, Export, Utilities, Setup, SCORM2004 are trivial I think there is no need for a dedicated review there.

Some technical notes:

• The introduction of the NPM dependency 'mathjax' was already approved in the JourFix with acceptance of the feature request.
• MathJax is delivered as a distribution with already bundled components. The script components/ILIAS/UI/resources/js/MathJax/mathjax.js which is copied to the public folder sets the MathJax configuration in the browser and loads MathJax asynchronously.
• The MathJax service is deleted. Most of the work is now done in the UI Framework. I followed the proposals made by thibsy and klees during preparation of the FR.
• The Jour Fix decided that MathJax should be activated with a setting, like in former versions. This setting is read from the ILIAS config file by the setup of the UI framework and stored in the settings table. It is read in ilInitialisation::initUIFramework to create a data object implementing the interface \ILIAS\UI\Implementation\Render\MathJaxConfig which is provided for the UI framework.
• The MathJaxConfig is also provided via DIC for the components to control the display of the MathJax hints, mostly below textarea form elements that support MathJax.

[mjansenDatabay]

The changes in "my" components LGTM!

[Amstutz]

Hi @fneumann

Thx a lot for this big and important contribution. We looked over the UI related changes. We agree with the core concepts. However, there are public interface changes which need JF approval and several smaller things that need discussion and/or changes. This is more than can be achieved until tomorrow evening. Therefore, we are afraid, this will be too tight for the upcoming release. We would appreciate it if you contact us early, especially when we approach deadlines. We are willing to help push a large project over tight deadlines; however, we need to sync the workload if time-consuming tasks like this need fast processing.

Note, UI changes are release-independent. It could be possible to merge them, after the release date. However, this is not the case for the implementation of the underlying FR.

Thx a lot
@Amstutz, @klees, @thibsy

[mjansenDatabay]

Thank you very much for your review at such short notice @Amstutz, @klees, @thibsy .

We will postpone the impl. to ILIAS 11.

[kergomard]

Thanks for the PR @fneumann

Even if this is not for ILIAS 10, I approve the changes for the Test, this way you do not need for us, once this is done.

Best,
@kergomard

[matthiaskunkel]

I remove the 'dependency' tag for this PR as it is about code changes for 11 and not related to a dependency we have to discuss at the Dependency JF. For the MathJax dependency there should be a proper PF.