Appending 'wiki/Main_Page' to home page links currently pointing to http://[LANG_CODE].(zero|m).wikipedia.org/.
Currently, users accessing http://[LANG_CODE].zero.wikipedia.org/ are incorrectly being redirected to
http://[LANG_CODE].m.wikipedia.org/ without warning. This corrects this behavior.

Change-Id: Iebb256f59b3066fd52be5b848469a6c594b06793