Description
As part of the Test Kitchen renaming (MetricsPlatform => TestKitchen), ReadingList extension needs to be updated to use TestKitchen instead of MetricsPlatform (the latter will be removed eventually). Also some references to Experimentation Lab should be renamed to Test Kitchen as the new name for the platform.
All this work must be done once TestKitchen is available and working in production and before removing MetricsPlaform from there.
Acceptance criteria
- Usages of MetricsPlatform extension have been updated to use TestKitchen instead
- References to Experimentation Lab/xLab has been replaced with Test Kitchen
- The JS part of the same experiment has been also updated accordingly (the one that resides in WikimediaEvents)