Code cleanup part #1: move all the services and directive JS code in the app.js file into its own files

static/js/directives/focusable-popover-content.js

@@ -0,0 +1,37 @@
+/**
+ * An element which, when used to display content inside a popover, hide the popover once
+ * the content loses focus.
+ */
+angular.module('quay').directive('focusablePopoverContent', ['$timeout', '$popover', function ($timeout, $popover) {
+  return {
+    restrict: "A",
+    link: function (scope, element, attrs) {
+      $body = $('body');
+      var hide = function() {
+        $body.off('click');
+
+        if (!scope) { return; }
+        scope.$apply(function() {
+          if (!scope || !$scope.$hide) { return; }
+          scope.$hide();
+        });
+      };
+
+      scope.$on('$destroy', function() {
+        $body.off('click');
+      });
+
+      $timeout(function() {
+        $body.on('click', function(evt) {
+          var target = evt.target;
+          var isPanelMember = $(element).has(target).length > 0 || target == element;
+          if (!isPanelMember) {
+            hide();
+          }
+        });
+
+        $(element).find('input').focus();
+      }, 100);
+    }
+  };
+}]);