Fixed Non-ASCII attachment filename will crash when downloading.

Thanks to xet7 !

Fixes #2759

packages/wekan-cfs-http-publish/http.publish.client.api.js

@@ -0,0 +1,12 @@
+// Client-side is not implemented
+HTTP.publish = function() {
+  throw new Error('HTTP.publish not implemented on client-side');
+};
+
+HTTP.publishFormats = function() {
+  throw new Error('HTTP.publishFormats not implemented on client-side');
+};
+
+HTTP.unpublish = function() {
+  throw new Error('HTTP.unpublish not implemented on client-side');
+};