fix_string_downcase_and_upcase with tests
Fix for #170 (closed)
tests before: https://travis-ci.org/evandrojr/noosfero/builds/108763773
tests after: https://travis-ci.org/evandrojr/noosfero/builds/108784591
Fix for #170 (closed)
tests before: https://travis-ci.org/evandrojr/noosfero/builds/108763773
tests after: https://travis-ci.org/evandrojr/noosfero/builds/108784591