increased client cache timer from a day to a year and changes static file generation into S3ManifestStaticStorage for cache busting strategy#1172

YuDavidCao wants to merge 4 commits intodevthecourseforum/theCourseForum2:devfrom

aws/increase-client-cache-timerthecourseforum/theCourseForum2:aws/increase-client-cache-timerCopy head branch name to clipboard