Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  7ca9def0fbc5ab01a7ae9d0b05eea74f4f525d3b

Refactored ResourceLoader QUnit test modules

- Split up modules containing more than one test file.
- Split up list of module definitions into separate files.
- Evaluated use of newWbEnvironment/newMwEnvironment

Change-Id: Id019051db23cb0f2c8b4d3c605dd1a94a9b27885