From Openness to Freedom

Hello,

after reading your draft, I realized that the [Guifi.net](https://guifi.net/) model is the one you're more interested in. It seems to me that __Guifi is a matter of freedom, rather than methodology__. As such, it relates much more to software freedom, a philosophy to free computer users from tyrannies, rather than open source, the development methodology born from free software.

This pull request does not address that issue fully, but provides a kickstart:

1. the first commit is entirely cosmetic, to address trailing spaces that may cause problems with editors and cause irrelevant differences later on.
2. the second commit replaces occurrences of open source with free software. Notably, it replaces the title to reflect the difference between an alledged "open source spirit" with an established "free software philosophy" as mentioned in Issue #1.

I hope these changes will help in __reframing the perspective of this paper towards the real goal of open networks__, which is the independence, freedom, and autonomy of their users, otherwise known as __technological sovereignty__.