net/rubygem-octokit: correct category
textproc/rubygem-nokogumbo: create port

Nokogumbo allows a Ruby program to invoke the Gumbo HTML5 parser and access the
result as a Nokogiri parsed document.

WWW: https://github.com/rubys/nokogumbo/#readme
Revert broken non-conversion to USES=pear
textproc/rubygem-nokogumbo: update to 1.1.12
www/rubygem-crass: create port

Crass is a pure Ruby CSS parser based on the CSS Syntax Level 3 draft.

WWW: https://github.com/rgrove/crass/
security/linux-c6-nss: update to 3.16.1

Upgrade linux-c6-nss to 3.16.1, due to CVE-2014-1568.
While there, add SRC_DISTFILES necessary due to licensing that did not make it
to r368845.

Approved by:	swills (mentor)
Differential Revision:	https://reviews.freebsd.org/D846
Security:	48108fb0-751c-4cbb-8f33-09239ead4b55