fix user/group permission not set correctly in persist

No idea how this ever worked, but for me all directories in /persistent
never have the write user/group permissions when freshly created.
This now also ensures that permissions will change if the configuration
changes, which is a nice side effect.

create-directories.bash

@@ -48,12 +48,10 @@ fi
 realSource="$(realpath -m "$sourceBase$target")"
 if [[ ! -d "$realSource" ]]; then
     printf "Warning: Source directory '%s' does not exist; it will be created for you with the following permissions: owner: '%s:%s', mode: '%s'.\n" "$realSource" "$user" "$group" "$mode"
-    mkdir --mode="$mode" "$realSource"
-    chown "$user:$group" "$realSource"
+    mkdir "$realSource"
 fi
 
 [[ -d "$target" ]] || mkdir "$target"
 
-# synchronize perms between source and target
-chown --reference="$realSource" "$target"
-chmod --reference="$realSource" "$target"
+chown "$user:$group" "$realSource" "$target"
+chmod "$mode" "$realSource" "$target"