Review of documentation

[peisenha]

Please find below some remarks about the current state of the documentation in develop

• repeatedly we point to the old repository grmToolbox/grmpy, please comb through the package and fix everywhere. See installation.html as a example, or the badges in the software engineering section
• some references are not properly formatted
• the figures in the reliability section are not part of the repo at this point
• please make sure that the online documentation for develop actually compiles properly on readthedocs.org
• please remove all reference about the ability to simulate binary covariates from the documentation. I just want to be able to use this in teaching at a later stage.

[peisenha]

@benediktkauf , please confirm all done, then close.

[bekauf]

all done