Description of problem:
Displayed messages in the event tab are not updated.


Version-Release number of selected component (if applicable):
3.4


How reproducible:
100%


Steps to Reproduce:
1. Login into system by Web Admin
   - Verify that the tab will show the message "User <user name> logged in."
2. Execute any action that provides a message to the Event log, as add or revome disks.

Actual results:
The Event tab does not update the content, it keeps displaying "User <user name> logged in." as the last message.

Expected results:
The Event log must be updated with new messages according with the executed actions.


Additional info:
After login to the system (Web Admin) again the Event tab is updated, but freezes again for new actions.