only one translation for image_count keys

CI was picking a different one then my dev env... strange.
Merge pull request #58 from azul/test/page-integration-tests

page integration tests
minor: align def and end [skip ci]
style: use ruby 1.9 style hashes
File.exists? is deprecated since ruby 1.9 it seems
do not rescue Exception - default is StandardError

calls to exit and kill signals will be caught (except kill -9) with rescue Exception - not what we want
minor: no need to use .to_s in interpolation