simplified kanban:

Before this change tasks were resorted on drop. By introduction of server-sent events, this is no longer required, as resorting also happens triggered by the server side.

frontend/src/routes/project/Kanban.svelte

@@ -97,12 +97,6 @@
             body        : JSON.stringify(patch)
         });
         if (resp.ok){
-            delete tasks[task.assignee][task.status][task.id]
-            if (!tasks[user_id]) tasks[user_id] = {}
-            if (!tasks[user_id][state]) tasks[user_id][state] = {}
-            tasks[user_id][state][task.id] = task;
-            task.assignee = user_id;
-            task.status   = state;
             yikes();
         } else {
             error(resp);
@@ -139,8 +133,6 @@
         return [10,20,40,60,100].includes(state);
     }
 
-
-
     async function load(){
         try {
 			eventSource = eventStream(handleUpdateEvent);