Odoo 9.0 - en to ja translation catalogue (4 entries)

note: module: gamification_sale_crm
en: Customer Refunds
ja: 顧客返金

note: module: gamification_sale_crm
en: New Opportunities
ja: 新規商談

note: module: gamification_sale_crm
en: New Sales Orders
ja: 新規受注

note: module: gamification_sale_crm
en: days
ja: 日数
