enable agent to create more than 1 manual task in a row

when the agent clicks "יצירת משימה חדשה" more than once, before editing/changing the previously created manual tasks, nothing happens (except for a textual console message the user can't see:

```Not creating duplication of already existing task משימה חדשה```

Two options for expected behvaiours:

1. Show a pop-up/error message: "ישנה משימה ידנית קיימת שעוד לא נערכה, אנא ערכו אותה לפני יצירת המשימה הבאה".
This option will help to ensure each manual task will be edited and populated with real content, before creating the next task. Remember that current tasks can not be deleted and therefore it will minimize the clutter in the tasks queue.

2. Create the new manual task with a counter in the title ("משימה חדשה 2", "משימה חדשה 3"). If this option is implemented, please avoid showing 1 in the task title.