Encrypt communication between server and crunchers.

[trokam]

All the communication of crunchers with the server goes through the web process 'http://trokam.com/action'. This must be changed to 'https://trokam.com/action' using an SSL certificate.

The server assign tasks only to registered crunchers. The crunchers send their ID to identify themselves in server, therefore the ID and all other data must go encrypted.

Current implementation let the possibility for some one else take the identity of a cruncher.