fix table scan for pg migrations
Disable xss santization

issue #1378
fixes #1328

- xss santization does some odd things. This isn't needed until we have multi-user support, and we are investigating better solutions.
Updating to latest Casper
Merge pull request #1864 from ErisDS/issue-1328

Disable xss santization
Merge pull request #1861 from pogoapp/fix_pg_table_scan

fix table scan for pg migrations
ghost-busboy improvements

- use hex instead of base64 as this can cause errors when trying to reopen the file due to characters like '/' appearing
- added basic console log to errors.