(bug 56634) Add grammatical cases for Old English

This patch adds grammatical cases for the localized
names of 'Wikipedia' and 'Wiktionary' ('Wikipǣdia'
and 'Wikiwordbōc', respecitvely) as provided
by Espreon in bug 56634 comment 3 and by Axonfifty
in bug 56634 comment 9.

Bug: 56634
Change-Id: Iee3d69a1380e185da2506c7d4b842da69cff2630
Merge "(bug 56634) Add grammatical cases for Old English"