Odoo Server saas~13.1 - en to sr translation catalogue (4 entries)

note: module: gamification_sale_crm
en: New Leads
sr: Novi lidovi

note: module: gamification_sale_crm
en: New Opportunities
sr: Nove prodajne prilike

note: module: gamification_sale_crm
en: days
sr: dana

note: module: gamification_sale_crm
en: leads
sr: lidovi
