AngularJS Navigation does not work after tinymce directive

I have problem I can't figure out but I do have a hint. Before integrating TinyMCE the main navigation was working fine eg links Settings, Analytics, Setup; it isn't working now if you click them.

Here is my js file:

var app_htmleditor_module = angular.module('app_htmleditor', ['components']).
    config(['$routeProvider', function($routeProvider) {
        $routeProvider.
            when('/', {templateUrl: getBaseURL()+'public/tpl/app/htmleditor.htm',   controller: HtmlEditorCtrl, reloadOnSearch:false }).
            otherwise( {redirectTo: '/'});
    }
]);

angular.module('components', []).directive('imageUpload', function () {
    return {
        restrict: 'E',
        scope: {
              uploaderid:'@uploaderid'
            },
        templateUrl: '/public/tpl/imageupload.htm'
    }
});

app_htmleditor_module.directive('uiTinymce', function() {
     return {

         require: 'ngModel',
         link: function(scope, element, attrs, ngModel) {

             element.tinymce({
                 // Location of TinyMCE script
                 script_url: 'http://resources.holycrap.ws/jscripts/tiny_mce/tiny_mce.js',

                 // General options
                 theme: "simple",

                 // Change from local directive scope -> "parent" scope
                 // Update Textarea and Trigger change event
                 // you can also use handle_event_callback which fires more often
                 onchange_callback: function(e) {

                     if (this.isDirty()) {
                         this.save();

                         // tinymce inserts the value back to the textarea element, so we get the val from element (work's only for textareas)
                         //ngModel.$setViewValue(e.getBody().innerHTML);
                         ngModel.$setViewValue(element.val());
                         scope.$apply();

                         return true;
                     }
                 }
             });

         }
     }
});

And I added above tinymce directive into textarea using ui:tinymce like this:

<textarea ui:tinymce ng-model="data.html_tab" id="{{fileUploaderID}}_html_tab" name="{{fileUploaderID}}_html_tab" style="width:600px; height:300px"></textarea>

Notice ui:tinymce above. If I remove that, the navigation works fine again. So how do I make my navigation work with ui:tinymce added in textarea?

DEMO URL:

http://dev-socialapps.rkm-group.com/app/htmleditor/index#/

Any help will be greatly appreciated. Thanks

Update:

As suggested, I added ui js file to my template file first:

<script src="https://raw.github.com/angular-ui/angular-ui/master/build/angular-ui.js"></script>

Then In my js file, I added:

var app_htmleditor_module = angular.module('app_htmleditor', ['components', 'ui']).
    config(['$routeProvider', function($routeProvider) {
        $routeProvider.
            when('/', {
                templateUrl: getBaseURL()+'public/tpl/app/htmleditor.htm',
                controller: HtmlEditorCtrl,
                reloadOnSearch:false
            }).
            otherwise( {redirectTo: '/'});
    }
]);

app_htmleditor_module.value('ui.config', {
   tinymce: {
      theme: 'simple'
   }
});

And in textarea tag:

<textarea ui-tinymce ng-model="tinymce" id="{{fileUploaderID}}_html_tab" name="{{fileUploaderID}}_html_tab" style="width:600px; height:300px"></textarea>

But I am getting error:

ReferenceError: tinymce is not defined

Though ui js file is added fine, I confirmed by viewing source code and clicking on link