Bug 959144 - Respect use_authorization_tokens=false in rhc setup

If the config disables use_authorization_tokens, don't automatically pull from the token store for rhc setup.  Continue to prompt to enable tokens.
Bug 959542 - Handle empty tables cleanly

Array#max can return nil
Merge pull request #375 from smarterclayton/bug_959144_respect_disable_authorization_tokens_in_setup

Merged by openshift-bot
Merge pull request #376 from smarterclayton/bug_959542_handle_empty_tables_better

Merged by openshift-bot