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Change-Id: Ieecb3815f0bc05d7361685c51dbd49526808058c
(FR #823) bt does not need special forms for AVS

Change-Id: I4c8714fe0024855651851a1e37be4a8209505e73
Merge branch 'fundraising/1.20' of ssh://gerrit.wikimedia.org:29418/mediawiki/core into fundraising/1.20