Add unicorn development config
No more verbose sidekiq =)
Add book scoped module
Receipts and invoices by client
Unicorn development config
Little improvement in customer voucher header
Merge branch 'client-history'
Add customer's search
Really filter sheets by customer...
Improve customer index and show
Merge branch 'master' into services

Conflicts:
	Gemfile.lock
	app/helpers/receipts_helper.rb