Growth/Analytics updates/Intervention modifications

This page aims to document changes to the Growth Team's suite of interventions in order to enable us to determine whether they affect our analyses, describe them in reports, etc.

Welcome Survey
FIXME: document when it was deployed to Czech and Korean, when Variant C was deployed to those wikis, when it was deployed to Vietnamese, when we switched Vietnamese back to the A/B test, when we turned it off on Vietnamese, when Czech and Korean both got 100% Variant A, and when it was deployed to Arabic.

Help Panel
FIXME: document when it was deployed to Czech and Korean, when we added additional namespaces (reading) and search, when it was deployed to Vietnamese, and when it was deployed to Arabic.

Newcomer Homepage
FIXME: document when it was deployed to Czech and Korean on desktop, when it was deployed on mobile, when both were deployed to Vietnamese, and Arabic.