Updated mediawiki/extensions
Project: mediawiki/extensions/ContentTranslation  dd819bc9c87db083a3a8e34250493309b35b96ba

MT: Do not show source text till the result of MT is known.

* Using css opacity to block the display of source text.
* Avoid the flash of text in translation section.
* Once MT is ready, show the MT card

Change-Id: I80539fe3e935635d32f09c0910e9962223c4fb50