Hogan.js is used in MobileFrontend and non-standard given Mustache's existence in core. By removing Hogan, we get a smaller and **maintained** library, a consistent way to render server and client templates and we unblock teams like performance (see T127268).
Precursors:
[] All templates are generated by a util wrapper function
[] All templatePartials are gone.
[] RelatedArticles no longer uses templates and/or mediawiki.template.hogan
= Developer notes
```
renderTemplate: function ( templateSourceCode ) {
return mw.template.compile( templateSourceCode, 'hogan' );
}
```
will be swapped with
```
renderTemplate: function ( templateSourceCode ) {
return mw.template.compile( templateSourceCode, 'mustache' );
}
```
= Acceptance criteria
[] We have QAed all features prior to merge.
[] It is possible to revert the patch if we hit any problems