Bump rails up to 4.1.4. Fix CVE-2014-3483 for Rails 4.x

https://groups.google.com/forum/#!msg/rubyonrails-security/8GtfeYd6qI4/j1uGT3IuCosJ

http://weblog.rubyonrails.org/2014/7/2/Rails_4_0_8_and_4_1_4_have_been_released/