Org files (#1183)

* Organize files

* Import EventsMixin

* Import NavigateMixin

* Dissolve window.hassMixins

* Apply ElementMixin when we use it

* Update tests to point at right dir

* Eslint

* Clean

* Update mixins inside hassio

* Update lint command"

* Fix polymer lint

src/common/entity/input_dateteime_icon.js

@@ -0,0 +1,11 @@
+/** Return an icon representing an input datetime state. */
+import domainIcon from './domain_icon.js';
+
+export default function inputDateTimeIcon(state) {
+  if (!state.attributes.has_date) {
+    return 'mdi:clock';
+  } else if (!state.attributes.has_time) {
+    return 'mdi:calendar';
+  }
+  return domainIcon('input_datetime');
+}