added basic service classes for key pairs, key store, and certificates
Merge remote-tracking branch 'origin/devel-interim' into feat-security
added signing rdf functionality
fixed initialization of cryptography service classes
Cryptography: changed algorithms for signing to ECC
fixed WonSignerVerifierTest
fixed initialization of key store if no key store file is existing
fixed initialization of key store if no key store file is existing (#2)
started integration with signingframework
added examples with signature for the need creation step: possible need RDF structure
updated graph signing examples
integration with signingframework

- initial implementation of converter between named graph representation in Jena (Model) and the on in Singingframework (NamedGraph)
- initial implementation of our own Assembler that places the signature triples in defined by us RDF structure
continue implement converter between Model(Jena) and GraphCollection with one NamedGraph( Singingframework)

- add support for Resource DataType when converting it into String for when creating Signingframework triple
- add input test file that contains objects with data types (for testing)
- change converter method signature to simplify the usage
- change ModelConverter tests not to hardcode graph name to be tested
finish implement converter between Model(Jena) and GraphCollection with one NamedGraph( Singingframework)

- use GraphCollection when converting without applying prefixes - solves errors resulting from how Signingframework applies prefixes
- improve ModelConverter test cases
- add test input that contains RDF without prefixes
- delete test input that is not used
- clean up ModelConverter code
implement Signer and Verifier that use Signingframework algorithm but Won approach to RDF with signature assembling

- do initial implementation of WonSigner and WonVerifier
- rename old Signer and Verifier to *Old
- implement test cases
- add RDF files for testing
fix double hashing of graph

- use Signature instance without hashing (NONEwithECDSA), since the Signingframework algorithms do both canonicalization and hashing of the graph
add signingframework to local repository
fixing local signingframework repository
* moved signingframework repo to won-cryptography module
* removed updatePolicy for local repo
Merge remote-tracking branch 'origin/feat-security' into devel-interim

Conflicts:
	webofneeds/pom.xml