restore all except .julia, .juliabox, .ipython

restore all files and folders including dot files except the ones essential for correct working of juliabox
fix wss for ipython

prevent origin check.
cookie checks at host nginx filter incoming connections.
ipython websockets pointed to instance public IP
Merge pull request #84 from tanmaykm/tanmaykm

bypass amazon lbs for websocket
code refactor and fixes

- moved and reorganized scripts into separate folder
- added scripts for creating / unmounting loopback devices to be used as user home
- common base class for dynamodb tables
- jbox.user can now override only part of the entries of nested sections
- corrected accounting table code
- corrected websockets cors issue
- added SIUnits to packages installed (required for oft used sample notebooks)
better mount script
Merge pull request #85 from tanmaykm/tanmaykm

code refactor and fixes
updated install scripts
ec2 autoscale instances
removed old setup script
Modified backup_bucket, since S3 doesn't allow underscores in bucket names anymore.
Modified installation instructions to reflect the change in the S3 bucket name.
Merge pull request #89 from tanmaykm/tanmaykm

ec2 autoscaling support
Merge pull request #88 from rudimk/master

Modified backup_bucket config variable
added Images and imagemagick
Merge pull request #91 from tanmaykm/tanmaykm

added Images and imagemagick