allow multiple apd's per plugin dir

Zotlabs/Lib/Apps.php

@@ -33,8 +33,9 @@ class Apps {
 		$files = glob('addon/*/*.apd');
 		if($files) {
 			foreach($files as $f) {
-				$n = basename($f,'.apd');
-				if(plugin_is_installed($n)) {
+				$path = explode('/',$f);
+				$plugin = $path[1];
+				if(plugin_is_installed($plugin)) {
 					$x = self::parse_app_description($f,$translate);
 					if($x) {
 						$ret[] = $x;

Zotlabs/Module/Import_items.php

@@ -78,6 +78,8 @@ class Import_items extends \Zotlabs\Web\Controller {
 	//	logger('import: data: ' . print_r($data,true));
 	//	print_r($data);
 	
+		if(! is_array($data))
+			return;
 	
 		if(array_key_exists('compatibility',$data) && array_key_exists('database',$data['compatibility'])) {
 			$v1 = substr($data['compatibility']['database'],-4);