Description of problem:

in order to export a questionnaire, double clicking on "export" button is needed

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

How reproducible: always

Steps to Reproduce:
1.navigate to assessment tab in administration 
2.view your already imported questionnaires (if not present import one) then refresh the tab
3. click on action button next to the questionnaire, click export (nothing happens), click export again -> downloaded successfully 

Actual results:

clicking two times in order to download the questionnaire 

Expected results:

clicking one time in order to download the questionnaire 

Additional info: