put ownCloud logs in separate log files

conf/nginx-primaryonly.conf

@@ -11,7 +11,12 @@
 	rewrite ^/cloud/(contacts|calendar|files)$ /cloud/index.php/apps/$1/ redirect;
 	rewrite ^(/cloud/core/doc/[^\/]+/)$ $1/index.html;
 	location /cloud/ {
+
+		access_log /var/log/owncloud/access.log;
+		error_log /var/log/owncloud/error.log;
+
 		alias /usr/local/lib/owncloud/;
+
 		location ~ ^/(data|config|\.ht|db_structure\.xml|README) {
 			deny all;
 	 	}

setup/owncloud.sh

@@ -90,9 +90,10 @@ EOF
 ?>
 EOF
 
-	# Create user data directory and set permissions
+	# Create user data directory, log directory and set permissions
 	mkdir -p $STORAGE_ROOT/owncloud
-	chown -R www-data.www-data $STORAGE_ROOT/owncloud /usr/local/lib/owncloud
+	mkdir -p /var/log/owncloud
+	chown -R www-data.www-data $STORAGE_ROOT/owncloud /usr/local/lib/owncloud /var/log/owncloud
 
 	# Execute ownCloud's setup step, which creates the ownCloud sqlite database.
 	# It also wipes it if it exists. And it deletes the autoconfig.php file.