adding newer_than and older_then named scopes
adding newer_than and older_then named scopes

evandrojr/noosferogov,evandrojr/noosferogov,evandrojr/noosferogov,evandrojr/noosferogov,evandrojr/noosferogov,evandrojr/noosferogov,evandrojr/noosferogov