code: function _apply (tmpl_name, tmpl_args){
  	
  	var ret = null;
  	
  	var tmpl = _get(tmpl_name);
  	if( tmpl ){
  	    ret = mustache.render(tmpl, tmpl_args);
  	}
  	// if( tmpl ){ console.log('rendered string length: ' + ret.length); }
  	
  	return ret;
      }
docs: Get a string from a named mustache template, with optional args.