when clicking "extract" button, explicitly set order of dom events to be click -> swap form action -> submit form -> disable download button, such that the submit always happens before disabling the button (re: #350)
when clicking "extract" button, explicitly set order of dom events to be click -> swap form action -> submit form -> disable download button, such that the submit always happens before disabling the button (re: #350)

nim65s/tabula,newsdev/tabula,mr-justin/tabula,tabulapdf/tabula,nivertech/tabula,nivertech/tabula,mr-justin/tabula,tabulapdf/tabula,tabulapdf/tabula,nivertech/tabula,mr-justin/tabula,newsdev/tabula,nim65s/tabula,newsdev/tabula,nim65s/tabula