Update the default content page to be aligned with the current state of
the mocks-ups.

Signed-off-by: Alejandro Visiedo <[email protected]>

Align the preparation wizard page with what is defined in the mock-ups.

Signed-off-by: Alejandro Visiedo <[email protected]>

Move into a third point for the ordered list to collect there the step to
install the package if it were not installed.

Signed-off-by: Alejandro Visiedo <[email protected]>

This change add an initial component to the wizard, which check verify
when the registration happened. This change add new callbacks to the
application context to make available the information into the whole
application.

Signed-off-by: Alejandro Visiedo <[email protected]>