www-site: Replace JS date formatting with Pelican + fix hero#587

Vedant-Acharya wants to merge 1 commit intoapache:mainapache/www-site:mainfrom

Vedant-Acharya:fix/date-time-issue-in-indexVedant-Acharya/www-site:fix/date-time-issue-in-indexCopy head branch name to clipboard