Make the maximum language cache size configurable

Authored by tstarling on Mar 20 2017, 2:59 AM.

Description

Make the maximum language cache size configurable

Make the language cache size configurable, and increase the default from
20 to 30. It needs to be fairly small on default installations, but can
be essentially unlimited if $wgLocalisationCacheConf['manualRecache'] is
true.

Bug: T85461
Change-Id: Idb17691b30b0d2565a1624e5159df7d9b795764d

Details