Add ability to run multiple test cases

[suever]

Currently we have to write a do...while loop in the code to link to create a version that will run multiple test cases. We should modify the UI slightly so that the user can provide multiple test cases that will be run. Need to think of the best way to display this to the user (both input and output) and how to handle this on the server side (i.e. do we send each separately or in bulk)