reporting-engine/kpi_dashboard/views/webclient_templates.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <template id="assets_backend"
              name="Backend Assets (used in backend interface)"
              inherit_id="web.assets_backend">
        <xpath expr="." position="inside">

            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget_registry.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget/abstract_widget.js"/>

            <script type="text/javascript" src="/kpi_dashboard/static/src/js/dashboard_renderer.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/dashboard_model.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/dashboard_controller.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/dashboard_view.js"/>

            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget/number_widget.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget/meter_widget.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget/graph_widget.js"/>
            <script type="text/javascript" src="/kpi_dashboard/static/src/js/widget/text_widget.js"/>

            <link rel="stylesheet" type="text/scss" href="/kpi_dashboard/static/src/scss/kpi_dashboard.scss"/>
        </xpath>
    </template>
</odoo>