Add a button in the admin panel to check OT&E status of a registrar

For now, it only displays a status of "Passed: true|false" or an error message in simple text. In further work we will make the UI nicer.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=229971564

java/google/registry/ui/js/edit_item.js

@@ -128,6 +128,7 @@ registry.EditItem.prototype.renderItem = function(objArgs) {
   goog.soy.renderElement(goog.dom.getRequiredElement('reg-content'),
                          this.itemTmpl,
                          objArgs);
+  this.runAfterRender(objArgs);
 };
 
 
@@ -263,10 +264,21 @@ registry.EditItem.prototype.cancel = function() {
 /**
  * Called after this.renderItem(), to allow for further setup of
  * editing.
+ *
+ * TODO(b/122661518): merge this with runAfterRender so we don't have two
+ * similar methods
  * @param {!Object} objArgs
  */
 registry.EditItem.prototype.setupEditor = function(objArgs) {};
 
+/**
+ * Called at the end of this.renderItem() to allow for registration
+ * of listeners and other tasks that depend on the existence of the items in the
+ * DOM
+ * @param {!Object} objArgs
+ */
+registry.EditItem.prototype.runAfterRender = function(objArgs) {};
+
 
 // XXX: These should really take @param {object} which is the form. Alas the
 //      only override which doesn't work this way, ResourceComponent.sendCreate