Updated mediawiki/extensions
Project: mediawiki/extensions/CirrusSearch  347eb83833bcc8e8338fb9cf18dcca75854b2cd8

Cleanup Builder code a bit

- Move file_text to new FileDataBuilder. I want to do more file metadata
  stuff eventually and it belongs here, not in PageDataBuilder
- Reorder PageDataBuilder sections to be consistent for all content models

Change-Id: I3987a0c47f1adc83a33a482980f53db2ac122650