Changed introduction and requirements->goals section in modularity

Added elaborated configuration setting
Split requirements into base and further modularity requirements
Some formatting
No, I think the mendelf part is belongs elsewhere, as it is too
low-level
Restructure of modularity configuration introduction
Removed section in configuration of modularity

The sections concerning the last requirement is fulfilled because
"the setup works". I find it to be too vague and unnecessary
Rewrite the configuration section
Added section about hardware modularity