Improve hisqis table

[OliEfr]

#20 by @Noxdor

In the future I'd love to see a sorting function implemented as well as a button to filter out failed exams, which were then passed in second or third try. For the first function the table data must be structured differently to work with the table search module already existing in Vuesax. It must be an array of objects with the keys being the same as the table headers. Right now it's just a two dimensional array. The second functionality would need a more elaborate sorting algorithms which understands if there are multiple instances of the same exam with the last one being passed to blend out the ones coming before.