Make ApiCreateAccount return camelcase statuses

Bug: 61663
Change-Id: I214d8eb7c9d49f55f49c5228c92806601c5499f6
(cherry picked from commit efcf0a3f61b5bcdf5f9f6f716fa732b6afb9336e)
Merge "Make ApiCreateAccount return camelcase statuses" into wmf/1.23wmf14