first signature factory implementation
Small cleanup
new pure tomp2p test for ttl managment
H2HSignatureFactory (using RSA) assigned in Client/Server Config
Adapted H2HSignatureFactory and H2HSignatureCodec to tomp2p interfaces
Adapted signature factory usage every where.
Added pure tomp2p test case to check a content protection key change
using only the cached hash (recoverd from signature) and a put meta call
Merge branch 'signature'