Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  4bb05b86005e346031be5e2a76103fb0613fcb46
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DonateImage code cleanup (minor)

use msg instead of wfMessage
use Message as argument of setTitle
take away method exists check for header
access skin inside getHeader

Change-Id: I1a001550319aca4ec94fcf977acc8361e7b3d704