'Discard project changes’ confirmation does not appear more than once

[milosveljkovic]

Steps to reproduce

1. Open projects list
2. Select project from list
   - At this point you are on Project Properties page of last selected project
3. Rename project (Save changes)
   - Project is ‘modified’
4. Go back to projects list
5. Select another project
   - You will see Dialog with question for proceeding (Enter ‘Cancel')
6. After ‘Canceling’ , you will be redirected to 'Project Properties' page of previous modified project
   (as expected)
7. Go back to the projects list. If you try to open the same project as last time (not the currently
   modified unsaved project), you will be redirected without asking for proceeding.