ft: JsonSchema components are now ImmutableJS compliant (#5952)

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

src/core/plugins/view/root-injects.jsx

@@ -100,7 +100,6 @@ const wrapRender = (component) => {
   return target
 }
 
-
 export const getComponent = (getSystem, getStore, getComponents, componentName, container, config = {}) => {
 
   if(typeof componentName !== "string")