Removed unnecessary module references
Made SpaceWizardPanel use default icon for space when setting up wizard for a new space.
CMS-1749 Include FormIcon in api_wizard.WizardPanel
Added chainable method className to api.dom.Element
Refactored WizardPanel a bit:
- Renamed title and subTitle and moved displayName and name into WizardPanelHeader
- Made WizardPanel require a WizardPanelParams in it's constructor so that all components could be created in correct order.