Progress bar minor change

        reader.addEventListener('progress', (event) => {

          if (event.loaded && event.total) {

            let percent = (event.loaded / event.total) * 100;

            // using 99 instead of 100 because progress reaches 100% at the end

            // of the upload but MD5 computation takes some time and showing a

            // completed progress bar could be misleading

            let percent = (event.loaded / event.total) * 99;

            commit('setProgress', { index, percent });

          }

        });