Encryption addition and moved stuff server side

Added GNU Privacy Guard to encrypt and decrypt messages through sockets for public key/private key encryption.

Changed callback function to do searching server side.

Moved shellShockStrings and sshBadStrings to pySysLib.py on the server side.

Added reciveDaterz function that when the server finds shellshock strings it downloads the scripts on the client and then passes it to the other added function returnDownload which opens the file and transfer binary data through sockets to the PySys server.