Replace usage of deprecated Title::escapeLocalURL()

Change-Id: Iad46557179b351a5ae38d3597a57cc2a446badb5
Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: I85a21c8e379bac695867a9836c300f60273568af
Replace deprecated/removed $wgExtensionAliasesFiles

Change-Id: I5c05a5efad86e99ef8f728ad98d5d55676827b1f
Merge "Replace deprecated/removed $wgExtensionAliasesFiles"