FE/Qt: Precompiled header hacking (work in progress).
FE/Qt: file header cleanups.
FE/Qt: 6660: Advanced extra-data management framework: Remove GUI_Export_StorageType, GUI_Export_Username, GUI_Export_Hostname, GUI_Export_Bucket (no longer used).
FE/Qt: VBoxDefs renamed to UIDefs and reworked into namespace. Corresponding files which were using VBoxDefs updated.
FE/Qt: Wizards rework: 1. Better NLS for all the wizards, 2. Removing (reworking, cleanup required) welcome pages, 3. Removing (hiding, cleanup required) summary pages.
FE/Qt: 6123: Initial implementation of expert-mode for VirtualBox wizards.
FE/Qt: 6123: Rework VirtualBox wizards to unify them at the common architecture required for an expert-mode support.