CRM-5284: Paste HTML content into email templates
CRM-5284: Paste HTML content into email templates

- Update UPGRADE-2.0.md

Djamy/platform,orocrm/platform,Djamy/platform,geoffroycochard/platform,geoffroycochard/platform,geoffroycochard/platform,Djamy/platform,orocrm/platform,orocrm/platform