Use GNUInstallDirs instead of HawaiiInstallDirs

No more Vibe dependencies.
Feature summary instead of MacroLogFeature

Produces a better output and is already available with CMake.
Remove Vibe dependency

We are using QtQuick now.
Require at least Qt 5.1.0

We need it for QtQuick Controls.
Remove C++ code

The UI is made with QtQuick now.
Fix desktop entry installation path

We are not using HawaiiInstallDirs anymore so we got to be creative.
Install Swordfish QML module on QML import path
Fix FluidExtra import

Version was changed to 0.2.
Also link to QtWidgets

Otherwise we won't be able to use the palette.