Bugfix and enhancement

Bugfix:

 - issue #55: Pidgin: changed global proxy in SOCK5; added A/I and Riseup CA
 - issue #66: Thunderbird: added CA (A/I and Indivia/Ortiche) and services certificates (A/I and riseup.net)

Enhancement:

 - dnsutils
 - freepto label
 - freepto version
 - kernel-lock script