Item15058: script tags for javascrit i18n should not use src attribute

jquery modules that come with i18n definitions were added in this format:

<script type='application/l10n' data-i18n-language='de' data-i18n-namespace='SOMEPLUGIN' src='/pub/System/SomePlugin/i18n/de.js' ></script>
<script type='application/l10n' data-i18n-language='en' data-i18n-namespace='SOMEPLUGIN' src='/pub/System/SomePlugin/i18n/en.js' ></script>

However any script tag with a src attribute is treated as a javascript asset and directly downloaded by the browser. Also https://validator.w3.org/ warns about it using a non-empty unrecognized type attribute. These specific script tags of type application/l10n are pointing to json definitions of string mappings for the given language and namespace. To make its use standard conforming again the src attribute should be a data-src attribute:

<script type='application/l10n' data-i18n-language='de' data-i18n-namespace='SOMEPLUGIN' data-src='/pub/System/SomePlugin/i18n/de.js' ></script>
<script type='application/l10n' data-i18n-language='en' data-i18n-namespace='SOMEPLUGIN' data-src='/pub/System/SomePlugin/i18n/en.js' ></script>

If data-src is not present it will fall back to src.

See System.JQueryI18N for more info.

-- MichaelDaum - 05 Jan 2022

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