LPS-51049 remove "helpful" column from KBComment
LPS-51049 remove references to `helpful` in services
LPS-51049 add user opinion to KBComment
LPS-51049 save user opinion when comment is saved
LPS-51049 show opinion only when != NONE
LPS-51049 don't read rating in view
LPS-51049 remove obsolete column on upgrade
LPS-51049 create add/update methods for staging
LPS-51049 Use userRating instead of userOpinion because userOpinion sounds to a string.
LPS-51049 SF
LPS-51049 Autogenerated
LPS-51049 sort
LPS-51049 consistency with service.xml name
LPS-51049 keep order consistent with how you are using it in *ServiceImpl
LPS-51049 Regen