... and collect latest changes, including:

* main key for dvzrv
* packager key for grawlinson

... and get latest changes, including:

* revocation of stativ's packager key
* revocation of thomas' master key (dan and giovanni loose full
  trust, but no single package is signed by their key)
* new key of dvzrv

get anthraxx's master key and his signatures

- add keys of new Trusted Users: zorin, shibumi, archangegabriel
- revoke keys of ex-TUs: flexiondotorg, dicebot
- revoke Dan's master key

Signed-off-by: Bartłomiej Piotrowski <bpiotrowski@archlinux.org>

We also remove unused signatures from the keys to keep the history more readable