Work on #3102. Moved all the components out of model.jsx into their own files so they can be grabbed via getComponent()

src/core/components/enum-model.jsx

@@ -0,0 +1,19 @@
+import React from "react"
+import ImPropTypes from "react-immutable-proptypes"
+
+const EnumModel = ({ value, getComponent }) => {
+  let ModelCollapse = getComponent("ModelCollapse")
+  let collapsedContent = <span>Array [ { value.count() } ]</span>
+  return <span className="prop-enum">
+    Enum:<br />
+    <ModelCollapse collapsedContent={ collapsedContent }>
+      [ { value.join(", ") } ]
+    </ModelCollapse>
+  </span>
+}
+EnumModel.propTypes = {
+  value: ImPropTypes.iterable,
+  getComponent: ImPropTypes.func
+}
+
+export default EnumModel