Add buttons to the sidebar and the basic navigation logic

trurt/__init__.py

trurt/account/__init__.py

trurt/account/login.py

trurt/account/profiles.py

trurt/account/settings.py

trurt/account/templates/account_home.html

trurt/account/templates/account_password.html

trurt/account/templates/account_register.html

trurt/admin/__init__.py

trurt/service/__init__.py

trurt/templates/base.html

trurt/templates/sidebar.html