Weston does not build for x86, because it depends on libunwind. And
libunwind is not available in Alpine for x86. I've also tried to
simply enable x86 in libunwind, but it does not build out of the box.
In order to start building again for x86 at all, let's disable weston
and all packages that depend on it on for now.
* Travis and Coveralls badges
* aports: instead of <https://github.com/postmarketOS>, use
<https://postmarketos.org>
* References to full URLs to issues and pull requests replaced with
a hash and the number
* grsec check: simplify error message, remove link to github issue
(nobody is using that anymore anyway)
