update servers for rails and move them into a logical group + cleanup unused gems

rails/Gemfile-jruby

@@ -1,7 +1,8 @@
 source 'https://rubygems.org'
 
 gem 'rails', '3.2.13'
-gem 'torqbox', '0.1.7'
 gem 'activerecord-jdbcmysql-adapter', '1.2.6'
-gem "rubyzip", "~> 1.0.0"
-gem "zip-zip", "~> 0.1"
+
+group :server do
+  gem 'torqbox', '0.1.7', :require => false
+end

rails/Gemfile-ruby

@@ -2,5 +2,8 @@ source 'https://rubygems.org'
 
 gem 'rails', '3.2.13'
 gem 'mysql2', '0.3.11'
-gem 'passenger',"4.0.19"
-gem "unicorn", "4.6.2"
+
+group :server do
+  gem 'passenger', '4.0.44', :require => false
+  gem 'unicorn', '4.8.3', :require => false
+end