Merge pull request #1 from tomsmeding/master

More interactiveness and code format
Merge pull request #2 from tomsmeding/master

Improved date choosing and output
Update README.md

Updated readme, workflow, thanks and features!
Update beta.php

Added Case4 = SO
Added Small comment
Update beta.php

added utf8_decode to homework for special chars
Update beta.php

Added Images instead of text for InfoType
Update beta.php

Added dynamic file naming (instead of mata-beta.php)
Added basic studiewijzer support, writing id to $_GET["studie"]
Update README.md
Update beta.php

Added auto spacing in the contents of homework