[*] Renames datum macros and node roles

[*] hash->hash_slow renames

[*] Complete UTXO API with tokens, tokens emissions and tx token.
[*] Fixed calc ballance
[*] dap_chain_addr changed is internal structure a little, same with related macro defines
[*] Others renames and refactors

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

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

[*] License information changed

[+] Block's section format
[+] Block's section roots header