Fix missing descriptions

svn path=/nixpkgs/trunk/; revision=24596

pkgs/applications/window-managers/fbpanel/default.nix

···
   '' [];
       
   meta = {
-    description = "${abort ''Specify description''}";
+    description = "A stand-alone panel";
     maintainers = with a.lib.maintainers;
     [
       raskin