[+] Datum operations functions
[*] Consensus and class are splitted. Class is for feature usage.
[*] Added const* everywhere (almost)

[-] Removed cache init calls
[*] Splitted token byt tx_item_token, token itself and token_emission

deleted Glib

added creation of transfer transaction by addr and sum in cache
fixed errors in the  transaction cache
modify create items functions

and sign items.
Added auxiliary functions for working with transaction items

modify structs for transaction items (dap_chain_tx_*)

[+] Added some headers

[-] srv files moved to lib-dap-chain-srv*
[*] Other moves and renames, sections->datums

[+] signature TX item type , "Tx suffix" in CryptoNote transaction

[+] Transactions and transaction items
[*] Some renames mostly related to section

[+] HashFusion from brian.monahan@hpe.com (c) Copyright 2017 Hewlett Packard Enterprise Development LP
[+] wrapper for hash functions moved also from libdap/crypto