Merge branch 'editor-milestones-logic' into 'dp-platkova'

frontend/src/editor/EmailTemplateFormDialog/index.tsx

frontend/src/editor/ExpressionBuilder/ExpressionBlock.tsx

frontend/src/editor/ExpressionBuilder/index.tsx

frontend/src/editor/InjectSpecification/ConnectionsForm.tsx

...editor/LearningActivitySpecification/ToolResponseForm.tsx

frontend/src/editor/ToolResponseFormContent/index.tsx

frontend/src/editor/ToolResponseFormDialog/index.tsx

frontend/src/editor/indexeddb/db.tsx

frontend/src/editor/indexeddb/operations.tsx

frontend/src/editor/indexeddb/types.tsx

frontend/src/editor/utils.tsx