TRACKER: Add support for renaming energy

Signed-off-by: Tomas Hozza <thozza@gmail.com>
GUI: improve the EnergyManagementWindow

Signed-off-by: Tomas Hozza <thozza@gmail.com>
GUI: Implement the manage energy button callback

Signed-off-by: Tomas Hozza <thozza@gmail.com>
GUI: Improve the add energy button callback

Signed-off-by: Tomas Hozza <thozza@gmail.com>