Fix session isssues (#730)

config/initializers/session_store.rb

@@ -2,9 +2,10 @@
 
 # Be sure to restart your server when you modify this file.
 
+# The key base was updated as part of 2.3
 if Rails.configuration.loadbalanced_configuration
-    Rails.application.config.session_store :cookie_store, key: '_greenlight-2_0_session',
+    Rails.application.config.session_store :cookie_store, key: '_greenlight-2_3_session',
         domain: ENV['GREENLIGHT_SESSION_DOMAIN'] || 'blindside-dev.com'
 else
-    Rails.application.config.session_store :cookie_store, key: '_greenlight-2_0_session'
+    Rails.application.config.session_store :cookie_store, key: '_greenlight-2_3_session'
 end