Separate System and User packages

- Move user programs out of systems section and int
  user section
- Install user packages with home manager rather than
  system wide

system/utilities/default.nix

@@ -0,0 +1,9 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./dbus.nix
+    ./gnome-keyring.nix
+    ./miscellaneous.nix
+  ];
+}