Take into account address_processing setting when creating and updating the contact via EPP

#251

config/locales/contacts.en.yml

@@ -0,0 +1,8 @@
+en:
+  activerecord:
+    errors:
+      models:
+        contact:
+          attributes:
+            country_code:
+              invalid: Country code is not valid, should be in ISO_3166-1 alpha 2 format

config/locales/epp/contacts.en.yml

@@ -0,0 +1,5 @@
+en:
+  epp:
+    contacts:
+      completed: Command completed successfully
+      completed_without_address: Command completed successfully; Postal address data discarded