Description of problem:
CR1 contains a new feature that icon "Validation" is a drop down menu. This menu contains items:
  - Start validation
  - Stop validation
  - View all issues

All of these items are enabled every time, do not reflected a state of validation.

Version-Release number of selected component (if applicable):
6.0.0 CR1

Use Case 1
----------
Steps to Reproduce:
1. create a valid process
2. start validation 
3. wait until alert "Starting validation" disappears
4. show validation drop down menu

Actual results:
All items are enabled.
you have not any idea if visual validation is running or not.

Expected results:
Item "Start validation" is disabled and the others (Stop Validation, View all issues) are enabled.


Use Case 2
----------
Steps to Reproduce:
1. create any process
2. select "View all issues" in validation menu 
3. close editor
4. show validation drop down menu

Actual results:
All items are enabled.
Validation is still running (if you click on any invalid element, you get alert with issues)
Any invalid element is not highlighting.

you have not any idea if visual validation is running or not.

Expected results:
Item "Start validation" is disabled and the others (Stop Validation, View all issues) are enabled.

OR

Item "Stop validation" is disabled and the others (Start Validation, View all issues) are enabled. Because actions for "View all issues" are :
  - start validation
  - find out all issues
  - stop validation
  - shows the results

Additional info: