Add promo ftl file to /exp/ home page (#10393)
Add promo ftl file to /exp/ home page (#10393)


craigcook/bedrock,sylvestre/bedrock,mozilla/bedrock,flodolo/bedrock,flodolo/bedrock,pascalchevrel/bedrock,sylvestre/bedrock,pascalchevrel/bedrock,alexgibson/bedrock,flodolo/bedrock,craigcook/bedrock,pascalchevrel/bedrock,alexgibson/bedrock,mozilla/bedrock,flodolo/bedrock,alexgibson/bedrock,pascalchevrel/bedrock,sylvestre/bedrock,alexgibson/bedrock,mozilla/bedrock,sylvestre/bedrock,mozilla/bedrock,craigcook/bedrock,craigcook/bedrock