Unclear path

[smadbe]

I realise that one strange behaviour of my instance of my app yesterday was due to a wrong configuration of my path in config... it was trying the contest assets for contest from teacher part while they are stored in the contest part or S3, because it was using teacherInterface->sAbsoluteStaticPath that I though should link to teacher url.

So long story short: it would be interesting to put a short explanation sentence in readme or config explaining what is the internal use / meaning of all 9(!) urls in the config file.