Security updates

## Rails updates
October 23, 2013 (Rails 3.2.15)
CVE-2013-4389

December 03, 2013 (Rails 3.2.16)
CVE-2013-4491, CVE-2013-6415, CVE-2013-6417, CVE-2013-6414

February 19, 2014 (Rails 3.2.17)
CVE-2014-0082, CVE-2014-0081 

## i18n updates 
December 04, 2013 (i18n 0.6.6)
CVE-2013-4492

## Dragonfly updates
May 24, 2013 (Dragonfly 0.9.13)
CVE-2013-1756

## Nokogiri updates
December 27, 2013 (Nokogiri 1.5.11)
CVE-2013-6460, CVE-2013-6461

## Will Paginate updates
December 17, 2013 (Fixed in 3.0.5)
CVE-2013-6459