feat(uac): add multi user management and UAC (#647)

app/directives/tooltip.js

@@ -0,0 +1,13 @@
+angular
+.module('portainer')
+.directive('portainerTooltip', [function portainerTooltip() {
+  var directive = {
+    scope: {
+      message: '@',
+      position: '@'
+    },
+    template: '<span class="interactive" tooltip-placement="{{position}}" tooltip-class="portainer-tooltip" uib-tooltip="{{message}}"><i class="fa fa-question-circle tooltip-icon" aria-hidden="true"></i></span>',
+    restrict: 'E'
+  };
+  return directive;
+}]);