Replace usage of deprecated Title::escapeLocalURL()

Change-Id: I8d5c31b671e0b42bc117b15b8018669bf1fcdb65
Call Linker methods statically

Change-Id: Ia37ffa514bb305fecb79376ffc55aab480a66b77
Use parser's title rather than $wgTitle

Change-Id: I5bfe42c857ac2e6c8f8ea68f90aa6eff51a97955
Migrate to JSON i18n

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

Change-Id: I25c76135f336dbf1d308bc1b4a8f8c793409dd65
Remove zh-[cn|tw] in favour of zh-han[s|t]

Change-Id: Id0603c2cd5aef71fdc77765ec6eb5aabac7fc9af