Angularjs template in external file

Hi,

I am loading templates from external files.
I created snippet: http://webix.com/snippet/aebb8c1b
that simulates external file by declaring template outside of the app.
The accordion is not created. When I move template inside the div of the app accordion is created.

how can I make it work when template is declared in external file?

Thank you.

I figured that I need to set webix-ui attribute on toppest div. http://webix.com/snippet/77345d18