Upgrade-Steps-for-new_dev-branch.md

+1. setting new project custom fields
+
 `bin/rails c`
 
 ```ruby
@@ -8,4 +10,6 @@ section = ProjectCustomFieldSection.first
 ProjectCustomField.find_each do |project_custom_field|
   project_custom_field.update!(custom_field_section_id: section.id)
 end
-```
+```
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+
+2. Remove in-app widget.
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