Linux: Adding separate clean desktop file

Holy crap.. There are also injected desktop files at other places.
Shoot me, please..

Signed-off-by: Thomas Karl Pietrowski <thopiekar@gmail.com>

CMakeLists.txt

@@ -199,8 +199,9 @@ if(ENABLE_INSTALL_TARGET)
         DESTINATION ${CMAKE_INSTALL_DATADIR}/qgroundcontrol
     )
     install(
-        FILES ${CMAKE_SOURCE_DIR}/deploy/qgroundcontrol.desktop
+        FILES ${CMAKE_SOURCE_DIR}/deploy/qgroundcontrol-clean.desktop
         DESTINATION ${CMAKE_INSTALL_DATADIR}/applications
+        RENAME qgroundcontrol.desktop
     )
     install(
         FILES ${CMAKE_SOURCE_DIR}/resources/icons/qgroundcontrol.png

deploy/qgroundcontrol-clean.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=QGroundControl
+GenericName=Ground Control Station
+Comment=UAS ground control station
+Icon=qgroundcontrol
+Exec=QGroundControl
+Terminal=false
+Categories=Utility;