update unicorn version
add cleanup recipe
cache satic assets
run rm logs every night
update cron tasks
add chron tasks specific to metrics application
fix typo
correct wildcard in cron time flag
add discharge and missing times to metrics scheduled tasks
update cookbook to send performance reports
Merge branch 'master-chef-11.4' of github.com:phongsi/opsworks-cookbooks into master-chef-11.4
merge master