add 4 hour browser caching on all static files
add 4 hour browser caching on all static files

jayoshih/content-curation,jayoshih/content-curation,jayoshih/content-curation,fle-internal/content-curation,jayoshih/content-curation,fle-internal/content-curation,DXCanas/content-curation,DXCanas/content-curation,DXCanas/content-curation,fle-internal/content-curation,fle-internal/content-curation,DXCanas/content-curation