If we delete aliases for multiple languages at a time it will show you multiple notification pop-ups.
Steps to Reproduce
Login to Zanata using admin.
Got to dashboard.
Click on projects.
Select any project/if not any create one.
Select the version/or create new one.
Click on settings but on top of right corner.
Select languages Setting.
Select all languages/more than 2.
and click on delete aliases it.
Observe the behaviour
Version setting message/pop-up show's in bulk/number of times of selected languages count.
Version updated message should have to show only once when we are enabling or disabling languages in bulk.
Attached screen captured for more ref.
fedora 25 + firefox 50
commit : 6fb744a5b93200ee1f15fb9d651c593f53b08190