Changes to style in language file has no effect. Dokuwiki uses a single stylesheet for all languages. Comment out the following line in parserutils.php to disable.

...
760        // $geshi->enable_classes();
...

Incorporating ASCIIMathML.js requires disabling JavaScript compression in the configuration settings.

• Copy ASCIIMathML.js to the conf/ directory.
• Create or update userscript.js to include ASCIIMathML.js.

/* DOKUWIKI:include ASCIIMathML.js */

• Update local.php to disable JavaScript compression:

$conf['compress'] = 0;   // for ASCIIMathML.js