Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  fdbbb74d1d4a524bf910475e31f754d818858ac3
null
Bug fix in whitespace normalization in serializer.

* Dont normalize whitespace on a text node that happens to be the
  only child of a parent.
* This eliminates RT errors on en:Mooreville Chalk.

Change-Id: I620720a0c8e6c1a389eac47cf3ecd2b2ce7abd21