Created a basic implementation of the discovery functionality.
Merge origin/master
Already cloned publications in the discovery plugin are now shown.
Discovery: Edited the error message. Added the count of the references.
Discovery: Added search by keywords.
Merge origin/master
Discovery: Added basic pagination.
configuration.seed flag converted from string to boolean.
Discovery: improved the control about the nature or the peer (seed or not).
Added protection against 127.0.0.1, localhost and "same origin" peers creation requests.
Merge origin/master