Post review feedback and amends

[jamieu]

• [JU] Check that new updates to codebase don't overwrite/clear existing data.
• Make smg-360 bucket publicly accessible (with open CORS headers)
• Add a link to list view on upload page (or create a new 'index' page that links to both)
• Add a refresh button to the 'list' view
• Show modified date in list view
• Swap order of name and id header column names in the list view (currently the wrong way around)
• Nicer error messages if no Object ID or Title
• Allow use to see failed uploads on the 'lists' view and to delete/clear them from the system at that point (basically so we don't end up with half broken folders/uploads in S3 and stale data kicking around).
• Handle duplicates gracefully ie.user uploads a 360, makes it inactive, user uploads a new 360 with same ID weeks later that they do want live. Each object ID can only have one 360. Maybe force the user to delete--or make inactive--the old upload first?
• Show a small thumbnail of the preview.jpg image at the root of each folder https://s3-eu-west-1.amazonaws.com/smgco-360/a5f9721b-5233-4e43-a696-00c55ade9d51/preview.jpg
• Add access to JSON feed to AWS resources owned by this account (or I could just add in another IP address?)
• Hide/toggle display of 'inactive' 360 records more than a week old and have a toggle to 'show all' (could load them all and just hide the inactive using JS/CSS if easier?)