* Add instructions for verifying Git tags
* Explain rationale for providing two methods of verification
* Update warrant canary link (Canary Watch has shut down)
* State that the QSP now contains Bitcoin fund info
* Fix "ó" in Marek's name
* Remove full CLI prompt (for uniformity with rest of site)
* Remove instructions for reading text files (unnecessary)
* Reorder list of QSP contents (move PGP keys to top, since
verification of everything else depends on them)