Fixed issue with digsig element in repeat groups - the setJoinData()

form model method automatically json decodes data, but digsig data needs
to stay encoded.  For now, re-encoded it within digsig, but should
probably have an element model isJSONData() or some such which defines
whether an elements data should be decoded or not.  Also updated digsig
JS library.

plugins/fabrik_element/digsig/digsig.php

@@ -59,6 +59,12 @@ public function render($data, $repeatCounter = 0)
 		$digsig_width  = $params->get('digsig_form_width', '400');
 		$digsig_height = $params->get('digsig_form_height', '150');
 		$val           = $this->getValue($data, $repeatCounter);
+
+		if (is_array($val))
+		{
+			$val = json_encode($val);
+		}
+
 		$basePath      = COM_FABRIK_BASE . '/plugins/fabrik_element/digsig/layouts/';
 		$layoutData    = new stdClass;
 		$input         = $this->app->input;
@@ -283,7 +289,14 @@ public function elementJavascript($repeatCounter)
 		$sig_id      = $id . '_sig';
 		$opts        = $this->getElementJSOptions($repeatCounter);
 		$data        = $this->getFormModel()->data;
-		$opts->value = htmlspecialchars_decode($this->getValue($data, $repeatCounter));
+		$opts->value = $this->getValue($data, $repeatCounter);
+
+		if (is_array($opts->value))
+		{
+			$opts->value = json_encode($opts->value);
+		}
+
+		$opts->value = htmlspecialchars_decode($opts->value);
 
 		if (empty($opts->value))
 		{