* @cfg {String} header_image src url of image.
* @cfg {String|Object} header
* @cfg {Number} header_size (0|1|2|3|4|5) H1 or H2 etc.. 0 indicates default
+ * @cfg {Number} header_weight (primary|secondary|success|info|warning|danger|light|dark)
*
* @cfg {String} title
* @cfg {String} subtitle