Add referential type to detect quantitative or relative type

src/cutecoin/core/account.py

src/cutecoin/gui/informations_tab.py

src/cutecoin/gui/transactions_tab.py

src/cutecoin/gui/transfer.py

src/cutecoin/gui/wallets_tab.py

src/cutecoin/models/txhistory.py

src/cutecoin/models/wallets.py