Remove completed_on from admin fields to fix #1220
Remove completed_on from admin fields to fix #1220

glogiotatidis/snippets-service,glogiotatidis/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,mozmar/snippets-service