Reorganize server code and add console client
Add working create, write, read commands

* Use register, then create, then write, then read, using a
  server-console.py connected to a server.py to try it out.
* Supports files of arbitrary length with 200-byte chunks.
Add simple encryption code

* Also add "transceive", with to-be socket interfacing code.
Merge branch 'server' of github.com:henchill/encrypted_file_system into client
working on client console