(bug 45268) cumulative fix replacing deprecated wfMsg calls

version 2.04

final and cumulative fix for replacing deprecated wfMsg * calls
with wfMessage.

It is an follow up to and includes the changes which were already
merged in https://gerrit.wikimedia.org/r/#/c/50478/ .

rebased to master d7f6cfbdc60483d35a6dbff4ef0935af08ed38ed

Change-Id: I76e744184228a5f20c26fb0575f0ff278fc0c437