Create device controller with and API to create a device

- Turn of assets and helper generation automatically

config/application.rb

@@ -31,5 +31,7 @@ module OnemdmServer
 
     # Do not swallow errors in after_commit/after_rollback callbacks.
     config.active_record.raise_in_transactional_callbacks = true
+    config.generators.assets = false
+    config.generators.helper = false
   end
 end