dashboard.html

<nav class="navbar navbar-default navbar-fixed-bottom" role="navigation">
    <div class="container">
        <button id="btn-AddNewProject" title="Create a new project" class="btn btn-success navbar-btn navbar-right">Add new project</button>
    </div>
</nav>

dashboard.js

'click #btn-AddNewProject': function(e) {
        // render "addNewProjectModal" into the lastNode of current "dashboard"-template instance
        var modal = Blaze.render(Template.addNewProjectModal, Template.instance().lastNode);

        // destroy rendered template when modal is hiding
        $('#addNewProjectModal').on('hide.bs.modal', function (e) {
            Blaze.remove(modal);
        });

        // show modal
        $("#addNewProjectModal").modal('show');
    }