Acceptance Criteria

• Delete the skin folder
• Drop the build for the skin
• Drop node modules and npm build script for skins in the root directory of the application.
• Cleanup 10h16 related a/b tests.
• Remove REDUX_LOG variable from Makefile

Fix CI Test Errors

1. Add a "skin": "laika" configuration entry to config.dist.json
2. add a "skin":"test" configuration entry to config.test.json
3. Adapt the JSOn schema for the configuration (adding the skin entry in app/config/schema.json)
4. Change FunFunFactory:getSkinDirectory to create the skin directory from the configuration instad of the ChoiceFactory (you can copy code from ChoiceFactory::getSkinTemplateDirectory, see other methods of FunFunFactory on how to acces the configuration)
5. Remove ChoiceFactory::getSkinTemplateDirectory and the skin configuration from app/config/campaigns.yml and app/config/campaigns_test.yml