Fix identity save on connection for revokation

src/sakia/data/entities/identity.py

src/sakia/gui/dialogs/connection_cfg/controller.py

src/sakia/gui/dialogs/connection_cfg/model.py

src/sakia/gui/main_window/toolbar/controller.py

src/sakia/gui/main_window/toolbar/view.py

src/sakia/gui/navigation/controller.py

src/sakia/gui/navigation/model.py

src/sakia/gui/navigation/navigation.ui

src/sakia/services/documents.py