Merge pull request #1 from StevenReitsma/master

Fix bug in TA-name and student-numbers
added a comment to the effect that this file is supposed to be unreadable
added e- and z- support to bbfix
added s- and z- support; removed old stuff which has not been tested for a long time
sez support
some more e-z- additions
little more efficinet
eliminated dupes in groepjes; removed optimization
added [sez] support
Wow. These scripts are 7 years old already.
minder stricte checking op het format van studentnummers
oops
Merge pull request #1 from squell/master