Localisation updates from https://translatewiki.net.

Change-Id: I12b49a091f576368bfd801b729d7df62a73ec4dc
Localisation updates from https://translatewiki.net.

Change-Id: Ib1a8d9cd5a1f4f6d0e991e0f32782c511b905a33
General fixes, style and comments / phpdoc

Add phpdoc to benefit editors
Remove used of a deprected method
Stop assigning in conditions

Change-Id: I24dceed8944d79eaeebf619ac8e449e7d02ece14
Fix file comments and add README file

Change-Id: Ic734c62c7e07c6eae1dde6c6d4a15d51d24a52c4
Localisation updates from https://translatewiki.net.

Change-Id: I5a33b47ed9360cdf3286abe4028fa05df014aea6
Migrate to JSON i18n

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

Change-Id: I976501e62bee980298ec41da6e8cc46638a00485