configure: added Gentoo to the supported distros.

--HG--
extra : amend_source : e11cf663d94b0fd4b4eb1f1fd47f0115aa52e533
fix logstash grok/geoip to observe on openbazaar network hello map
add virtualenv to the gentoo install command.
configure: added missing dependency on virtualenv for Gentoo. Thanks to gubatron
Email me button for vendors
Merge pull request #510 from ArneBab/master

configure: added Gentoo to the supported distros.
Notarizations gets separate page now
Email me button for vendors
Notarizations gets separate page now
GPG key readonly
Merge branch 'master' of https://github.com/hoffmabc/OpenBazaar
Updated headers
PEP Fixes
Merge pull request #515 from hoffmabc/master

Notarizations gets its own page
Clean up
Show amount in payment address in orders GUI
Renamed tornadoloop.py to openbazaar_daemon.py
Changed start/stop scripts accordingly.
Misisng semicolon
Two blank lines