replaced print_cloud_init_log by more general function print_remote_file + get_instance_by_group_and_status is renamed to get_instances_by_group_and_status and returns a list matching instances now
code formatting
moved functions to corresponding classes: Application.get_key_file_path() and Context.get_instances_by_app_identifier_and_state()
fixes according to valentin's code review + fixed problem with conifgure dialog (it was not possible to specify no SSL certificate)
log data (stored in Loggly) can be retrieved via 'minion ver log...' now
code clean up
implemented remote cat 'minion rcat <app_name> <instance_id>'
improved interface for log access (see 'minion ver logs <app name> <version>' and 'minion instances logs <instance id> <remote file path>')
resolved merge conflicts
removed hardcoded loggly account
removed hardcoded loggly account
Merge pull request #5 from zalando/launch_improvements

replaced print_cloud_init_log by more general function print_remote_file...