fix: less loose permissions, less +x

Closes coop-cloud/organising#283.

cli/autocomplete.go

@@ -83,7 +83,7 @@ Supported shells are as follows:
 		}
 
 		autocompletionDir := path.Join(config.ABRA_DIR, "autocompletion")
-		if err := os.Mkdir(autocompletionDir, 0755); err != nil {
+		if err := os.Mkdir(autocompletionDir, 0644); err != nil {
 			if !os.IsExist(err) {
 				logrus.Fatal(err)
 			}