Updated mediawiki/extensions
Project: mediawiki/extensions/BookManagerv2  29f0d8d174985c404afd0c6311c760c23b995c13

Fix bug where cache values were being stored incorrectly.

When the cache value was set when the JSON is changed, wgMemcKey
was being called twice and causing the value to be stored in the
wrong place.

Change-Id: I46fbb46357fd8e1a64d8d11cd0f897dfa4f014f8