Update desktop file.

(cherry picked from commit 482ef3eb5b)

src/kstreamripper.desktop

@@ -2,15 +2,10 @@
 Encoding=UTF-8
 Name=KStreamRipper
 Name[xx]=xxKStreamRipperxx
+GenericName=Stream Ripper
 Exec=kstreamripper
 Icon=kstreamripper
 Type=Application
-Comment=A simple KDE Application
-Comment[da]=Et simpelt KDE program
-Comment[es]=Una aplicación de KDE sencilla
-Comment[hu]=Egyszerű KDE-alkalmazás
-Comment[pt]=Uma aplicação KDE simples
-Comment[pt_BR]=Um simples Aplicativo do KDE
-Comment[sl]=Preprost program za KDE
-Comment[sv]=Ett enkelt KDE-program
-Comment[xx]=xxA simple KDE Applicationxx
+Comment=A streamripper GUI for KDE
+DocPath=kstreamripper/index.html
+Categories=Qt;KDE;AudioVideo;Audio;Player;