Visual Composer fixes "html2element" and "render" fixes

composer-view.js

html2element:function (html) {
    var attributes = {},
        $template;
    if (_.isString(html)) {
        this.template = _.template(html);
    } else {
        try {
            this.template = _.template(html());
        } catch (err) {
            this.template = html;
        }
    }
    $template = $(this.template(this.model.toJSON()).trim());
    _.each($template.get(0).attributes, function (attr) {
        attributes[attr.name] = attr.value;
    });
    this.$el.attr(attributes).html($template.html());
    this.setContent();
    this.renderContent();
},
render: function () {
    var $shortcode_template_el = $( '#vc_shortcode-template-' + this.model.get( 'shortcode' ) );
    if ( $shortcode_template_el.is( 'script' ) ) {
        var newHtmlCode =  _.template( $shortcode_template_el.html(),
                                        this.model.toJSON(),
                                        vc.templateOptions.default );
        if(!_.isString(newHtmlCode)){
            newHtmlCode = $shortcode_template_el.html();
        }
        this.html2element( newHtmlCode );
    } else {
        var params = this.model.get( 'params' );
        $.ajax( {
            type: 'POST',
            url: window.ajaxurl,
            data: {
                action: 'wpb_get_element_backend_html',
                data_element: this.model.get( 'shortcode' ),
                data_width: _.isUndefined( params.width ) ? '1/1' : params.width,
                _vcnonce: window.vcAdminNonce
            },
            dataType: 'html',
            context: this
        } ).done( function ( html ) {
            this.html2element( html );
        } );
    }
    this.model.view = this;
    this.$controls_buttons = this.$el.find( '.vc_controls > :first' );
    return this;
},