Re-including actions

Author: Mike Lautman

CMakeLists.txt

@@ -98,8 +98,7 @@ set(action_files
 rosidl_generate_interfaces(${PROJECT_NAME}
   ${msg_files}
   ${srv_files}
-  # TODO(mlautman) uncomment once IDL refactor fixes action issue
-  # ${action_files}
+  ${action_files}
   DEPENDENCIES
     action_msgs
     builtin_interfaces