Updated mediawiki/extensions
Project: mediawiki/extensions/Elastica  4d4d3c7e0a6aca7a0429377dfe11ffd973cc31a1

Delete submodule Elastica/adding Elastic library

Sub-submodules are a pain in the butt for deployment
purposes. Still using v0.90.7.0

Change-Id: Ie38267a8de4a747c2c3f3e27376f020e8507afbf