FE/Qt: Precompiled header hacking (work in progress).
FE/Qt: file header cleanups.
FE/Qt: Get rid of global UIMedium dependency over whole the GUI project.
FE/Qt: Global: Rename findMedium => medium.
FE/Qt: General Icon Update: Miscellaneous icons (part 2).
FE/Qt: Moving VBoxMedium stuff into separate folder, renaming it into UIMedium. Remove VBoxMedium stuff from VBoxGlobal/VBoxDefs.
FE/Qt: Copy Virtual Hard Drive wizard: Removing group-boxes from basic mode.
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.