Using coroutines extensively for sync calls

src/cutecoin/core/account.py

src/cutecoin/core/community.py

src/cutecoin/core/net/api/bma/access.py

src/cutecoin/core/registry/identities.py

src/cutecoin/core/registry/identity.py

src/cutecoin/core/wallet.py

src/cutecoin/gui/wot_tab.py