add hasActiveRowSelector to Semantic tables

Author: jcheron

Ajax/semantic/html/collections/table/HtmlTable.php

@@ -456,6 +456,10 @@ public function setActiveRowSelector($class="active",$event="click",$multiple=fa
 		$this->_activeRowSelector=new ActiveRow($this,$class,$event,$multiple);
 		return $this;
 	}
+	
+	public function hasActiveRowSelector(){
+		return isset($this->_activeRowSelector);
+	}
 
 	public function hideColumn($colIndex){
 		if(isset($this->content["thead"])){

Ajax/semantic/widgets/datatable/DataTable.php

@@ -616,6 +616,10 @@ public function setActiveRowSelector($class = "active", $event = "click", $multi
 		$this->_self->setActiveRowSelector($class, $event, $multiple);
 		return $this;
 	}
+	
+	public function hasActiveRowSelector(){
+		return $this->_self->hasActiveRowSelector();
+	}
 
 	public function hideColumn($colIndex) {
 		if (! \is_array($this->_hiddenColumns))