remove forgotten puts statements in specs
do not use deprecated methods Query#values_for and Query#operator_for
remove duplicated translation Enumeration#active and sort attribute enumerations alphabetically
add translation for the 'attachments' attribute on active record models
use add_work_package instead of add_issue (even in test names)
Merge pull request #784 from opf/fix/reduce_noise_when_running_tests

Fix/reduce noise when running tests