added thin wrapper around knox lib
enable update open logo task to use local storage id s3 not configured
allow update logo task to use local storeage when s3 not configured
Merge branch 'master' into local
Merge branch 'master' into local
use env variables directly to simplify
Merge branch 'master' into local

Conflicts:
	s3_settings.coffee
	tasks/update_logos.coffee
	tasks/update_open_logos.coffee
fix s3 and local image stores
delete unused directry document creator