Author: Petr Škoda
MDL-41019 improve language caching
Includes:
* no more hacky reloads, everything is written only once and kept until cache reset
* lang menu list is now cached in MUC
* both string and lang menu caches are compatible with local caches on cluster nodes
* config-dist.php cleanup
http://git.moodle.org/gw?p=moodle.git;a=commit;h=598a82c950c258a476b93952172c5e9d15333114
http://github.com/moodle/moodle/commit/598a82c950c258a476b93952172c5e9d15333114
+ 2.6 en [cachedef_langmenu,core_cache]