bug: JsonSchema components should validate schema properties exists
- schema
- type
- format
- enum
bug: fix a debounce error in JsonSchema_string if value is null
ft: new simplified JsonSchemaArrayItemText component
test: use immutableJS for `json-schema-form` test
test: add dev scripts to run `cypress open`
test: new cypress `schema-form` tests
This is a force-pushed squash of two PR merges (#5919, #5940) that were
formerly present on master as individual commits.
Co-Authored-By: kyle shockey <kyleshockey@gmail.com>
