Generated API documentation

[aschempp]

I have developed a first draft of a module that can read Contao core classes (and its docblocks) to generate a useful API documentation. The final result of the files currently looks pretty much the same as they are now, but the content is retrieved from within the classes.

https://github.com/aschempp/contao-apidocs

@leofeyer @qzminski

(currently only class files are generated, the methods are not there yet)

[qzminski]

Looks good to me. Good job!

[matzke]

+1 ... for a online readable api doc