install backup gem
add dropbox storage for backup
update asr.example.yml
making a deep symbolize of hash for ConfigReader
update db:backup rake task
increase freq of backups to every 6 hours
Merge branch 'features/refactor-backup' into develop
Merge branch 'develop'
remove create event period migration
filter inactive registrations when assigning players for event
Merge branch 'master' into features/devise

Conflicts:
	Gemfile.lock