Fix to 2.1.9. Fixes CI problems, and doesn't have strict mode

Gemfile

@@ -34,7 +34,7 @@ gem 'ejs',                     '~> 1.1.1'
 gem 'execjs',                  '~> 0.4' # Required by ejs
 
 gem 'net-ldap',                '0.16.0'
-gem 'json-schema',             '2.4.1'
+gem 'json-schema',             '2.1.9'
 
 group :production, :staging do
   gem 'unicorn',               '4.8.2'

Gemfile.lock

@@ -157,7 +157,7 @@ GEM
       multi_json (~> 1.0, >= 1.0.3)
     journey (1.0.4)
     json (1.8.6)
-    json-schema (2.4.1)
+    json-schema (2.1.9)
     jwt (1.5.4)
     kgio (2.10.0)
     launchy (2.4.3)
@@ -390,7 +390,7 @@ DEPENDENCIES
   google-api-client (= 0.7.0)
   hiredis (= 0.6.1)
   instagram (= 1.1.6)
-  json-schema (= 2.4.1)
+  json-schema (= 2.1.9)
   memory_profiler
   mocha (= 1.1.0)
   mock_redis