CAIQUM-6993: Improve the "note" functionality on the Events

Issue

• On the Event Management page, the "Notes" column, if added on the view, is not persistent, event on the same session
• On the Event Management page, the "Notes" indicator, does not display any test, even if hovering over it.
• On the Event page itself, if a note is existing it is not shown anywhere.
• Only when a user adds a notes, it will show previously added notes.

The above make the notes usability inconvenient for admins.
Ask is:

1. Make the "Notes" column persistent on the event management page.
2. Display the text of the note instead of the number of notes if hovering over it in the event management page
3. On the event page itself, show the existing notes' text.