Updated SJCL for ZeroBin

The SJCL is a widely used symmetric key cryptography library currently used by ZeroBin. 

More info:
https://github.com/bitwiseshiftleft/sjcl

I updated the SJCL library to the 1.0 version tagged last month. I am going to do more research on this version, then will likely merge by Thursday. This pull request maintains legacy support for old ZeroBin data.

This version:
https://github.com/bitwiseshiftleft/sjcl/releases/tag/1.0.0