Fix multiple validation issues

- Sub-templates were not getting processed
- Buttons without ID could clear / overwrite all sibling widgets
- Vfs validate checked widget type, some are now web components

api/src/Etemplate/Widget/Button.php

@@ -46,6 +46,12 @@ class Button extends Etemplate\Widget
 	 */
 	public function validate($cname, array $expand, array $content, &$validated=array())
 	{
+		// Can't "validate" a button without an ID.
+		// It won't have anywhere to go in the $content, and may overwrite its siblings
+		if(!$this->id)
+		{
+			return;
+		}
 		$form_name = self::form_name($cname, $this->id, $expand);
 		//error_log(__METHOD__."('$cname', ".array2string($expand).", ...) $this: get_array(\$content, '$form_name')=".array2string(self::get_array($content, $form_name)));
 

api/src/Etemplate/Widget/Template.php

@@ -252,7 +252,7 @@ class Template extends Etemplate\Widget
 			$expand_name = self::expand_name($this->original_name, '','','','',self::$request->content);
 		}
 		//error_log("$this running $method_name() cname: {$this->id} -> expand_name: $expand_name");
-		if($expand_name && $expand_name != $this->id)
+		if($expand_name && ($expand_name != $this->id || $cname !== $old_cname))
 		{
 			if (($row_template = self::instance($expand_name)))
 			{

api/src/Etemplate/Widget/Vfs.php

@@ -351,7 +351,7 @@ class Vfs extends File
 	public function validate($cname, array $expand, array $content, &$validated=array())
 	{
 		// do not validate, as it would overwrite preserved values with null!
-		if (in_array($this->type, array('vfs-size', 'vfs-uid', 'vfs-gid', 'vfs', 'vfs-mime')) ||
+		if(in_array($this->type, array('vfs-size', 'et2-vfs-uid', 'et2-vfs-gid', 'vfs', 'et2-vfs-mime')) ||
 			$this->is_readonly($cname, $form_name = self::form_name($cname, $this->id, $expand)))
 		{
 			return;