while calculating the row total, javascript was called and on some quantity, a number with a big decimal part was appearing.In this PR it is fixed
Fixes https://github.com/opensuse/osem/issues/1709
While buying the ticket, user was only able to see the integer part in total.So in javascript parseInt was replaced with parseFloat to show the decimal part too
Fixes https://github.com/openSUSE/osem/issues/1702