nodered - nodejs rework

roles/nodered/meta/main.yml

@@ -1,2 +1,2 @@
- dependencies:
-     - { role: nodejs, tags: ['nodejs'], when: nodered_install | bool }
+# dependencies:
+#     - { role: nodejs, tags: ['nodejs'], when: nodered_install | bool }

roles/nodered/tasks/install.yml

@@ -1,5 +1,10 @@
 # 2019-01-16: @jvonau's PR #1403 moved installation of Node.js (8.x for now) &
-# npm to roles/nodejs/tasks/main.yml, triggered by roles/nodered/meta/main.yml
+# npm to roles/nodejs/tasks/main.yml
+
+- name: NODEJS
+  include_role:
+    name: nodejs
+# 2020-01-04 no longer triggered by roles/nodered/meta/main.yml
 
 # BRUTAL but ensures consistency across OS's / distros like Raspbian Desktop &
 # Ubermix that often include an older version of Node-RED.  Brutal, as this
@@ -75,7 +80,7 @@
 
 - name: Install /etc/systemd/system/nodered.service systemd unit file from template
   template:
-    backup: yes
+    backup: no
     src: nodered.service.j2
     dest: /etc/systemd/system/nodered.service
     # mode: '0666'