Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  1f3587e706ef340b11f86eac6a5616c423380994
null
assume the watchlist has taken pageimages api into account

document why the limit is 50 so no one ups it

Change-Id: I8c9b9ba1885a6640ec9087c635e7e81be44dd65a