implemented synchronisation between editors:

whenever one editable field is activated, any other active editable field is resetted

frontend/src/Components/PriceEditor.svelte

@@ -1,4 +1,6 @@
 <script>
+    import { activeField } from './field_sync.svelte.js';
+
     let { editable = false, currency, value = $bindable(null) } = $props();
     let editing = $state(false);
 
@@ -15,6 +17,7 @@
     }
 
     function startEdit(){
+        activeField.update((n) => n+1);
         editing = editable;
     }
 
@@ -22,6 +25,8 @@
         if (ev.keyCode == 13) applyEdit();
         if (ev.keyCode == 27) resetEdit();
     }
+
+    activeField.subscribe((val) => resetEdit());
 </script>
 
 <style>