Normalize as and or language names

Compared which of these differ if run through UtfNormal::cleanup.
Not doing this causes all kind of nasty bugs if they end up used
for page titles. See the linked bug.

Bug: 38712

Change-Id: Ieaa429b921bc93e3a40b70a76da481c11dc9c3f6
Merge "Normalize as and or language names"