Upgraded version of Plone

The site was upgraded to a the latest version of Plone 4, version 4.3.15 and then migrated to Plone 5, version 5.0.8. However, we ran into a problem with uploading files and reverted back to the previous version.

Eventually, we'll migrate back to Plone 5 once all the bugs are worked out and hope to give the site a facelift as well.