(bug 44899) Namespace setup for Korean Wikiversity

This commit does three things:
* (1) It changes the default display for the NS_PROJECT_TALK namespace
into its Korean version (NS_PROJECT being defined by $wgMetaNamespace);
* (2) It adds a new alias for the NS_PROJECT_TALK namespace (with the
NS_PROJECT alias being set by default);
* (3) It adds new 102 and 103 namespaces in Korean, though without any
English aliases.

As far as I see, there are around 50 main namespace pages that begin
with the name of the new namespace ('위키배움터'), so I'll request the
namespaceDupes.php script to be run (since it's too much pages to be
moved manually).

Bug: 44899
Change-Id: Id9d9e73c6af0663175997e4b7e56fec248d70ec9