US-55 : double-click prevention on validate and skip buttons (#56)
US-55 : double-click prevention on validate and skip buttons (#56)

* double-click prevention

* corrected test

* refactored and cleaned version of double-click prevention

* change variables naming

* corrected partial and comments

* no comment on throttle

sgmap/pix,sgmap/pix,sgmap/pix,sgmap/pix