[Review] Request from 'wstephenson' @ 'SUSE/connect/review_140714_specify_language_with_envvar'

Please review the following changes:
  * 15f8a1c Remove test for command line option
  * 6f018d4 Set language from environment variable, remove command line option to do so
  * 42d8155 TDD: add testcase for setting language with env var
unless ENV['LANG'].nil? => if  ENV['LANG']