update messages
refresh all disks on startup and on new user image
Small README update. Fix #109.
Some more README updates.
fix 500 error on settings page.

Moving to DynamoDB V2 APIs returned Decimal instead of int in DB queries.
Doing a binary `&` requires a cast.
activate any unactivated account on fresh visit
Merge pull request #152 from tanmaykm/tanmaykm

multiple deployment and stability fixes