Batch import with partial header

Closes #13 (closed)

This MR has just a minor change which makes it possible to import a batch of students in the prerequisites manager with a partial CSV header. Where it used to be that you have to use the complete header now only two columns with for example "netid" and "ta_training" works as well. The netid column must be used, since this is the primary key.

added priomed typebug + 1 deleted label

closed

reopened

removed priomed typebug + 1 deleted label

Closing this since it's in the wrong repository.

closed