[GB.GUI]
* BUG: Use "$XDG_CURRENT_DESKTOP" before "$KDE_FULL_SESSION" to know if we are running KDE.
[GB.GUI.QT]
* BUG: Use "$XDG_CURRENT_DESKTOP" before "$KDE_FULL_SESSION" to know if we are running KDE.
[GB.GUI]
* BUG: Fix detection of GUI components and share some code with 'gb.gui.qt'.
[GB.GUI.QT]
* BUG: Fix detection of GUI components and share some code with 'gb.gui'.