FIX: Image names may contain special character (fixes #360)

Co-authored-by: Berache Lakhdar <lakhdarberache@gmail.com>
Co-authored-by: Chartier Corentin <corentinchartier334@gmail.com>

Author: 3 people

frontend/src/hyperglosae.js

@@ -59,8 +59,7 @@ function Hyperglosae(logger) {
       reader.readAsArrayBuffer(attachment);
       reader.onload = () => {
         const arrayBuffer = reader.result;
-
-        fetch(`${service}/${id}/${attachment.name}`, {
+        fetch(`${service}/${id}/${attachment.name.split('#').join('%23')}`, {
           method: 'PUT',
           headers: {
             // ETag is the header that carries the current rev.