Merge pull request #1 from ISibboI/Sibbo

Sibbo
Merge pull request #2 from ISibboI/Sibbo

Sibbo
Merge pull request #3 from ISibboI/Sibbo

Sibbo
Merge pull request #6 from ISibboI/Sibbo

Sibbo
Added License file.
Converted CryptManager to Singleton
Converted to maven project.
Removed build.xml
Added FlexiProvider for EC cryptography
Removed FlexiProvider, since it doesn't provide Sect curves.
Implemented encryption and decryption via ECIES.

Probably used wrong parameters for the operations, need to work out what
PyBitmessage uses.