hpi-swt2/hpi-hiwi-portal — pull request #528 by WGierke (2014-11-22 23:17:00+00:00)
Title: Fix/student matching

Hey guys,

a friend of mine mentioned some time ago that the student match function does not work properly.
As you can see students are returned who know at least one of the requested programming language but not each one:
I think I fixed it by this merge request.
I would be glad if you could have a look at it :)