679fc379c8d2f397d7e24445968f390d0e2f12b3

Convert the NewChange, RegisterNewEmail and ReplacePatchSet classes to use file based velocity templates which an admin may edit. Factor out getChangeDetail and getReviewersNames from formatChangeDetail and formatSalutation respectively to enable this. Change-Id: I36aa7051f06c7641114e2e681639267769846c22
Description
RETIRED, Gerrit as used by OpenStack