Reorganizing packages

src/sakia/app.py

src/sakia/core/__init__.py

src/sakia/core/account.py

src/sakia/data/connectors/node.py

src/sakia/data/graphs/__init__.py

src/sakia/data/graphs/base_graph.py

src/sakia/data/graphs/constants.py

src/sakia/data/graphs/explorer_graph.py

src/sakia/data/graphs/wot_graph.py

src/sakia/decorators.py

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

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

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

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

src/sakia/gui/dialogs/revocation/view.py

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

src/sakia/gui/main_window/status_bar/model.py

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

src/sakia/gui/navigation/graphs/base/controller.py

src/sakia/gui/navigation/graphs/base/node.py