-numerous changes to work with Raspbian 10

-redo of some roles, particularly GUI
-modifications to support working from a "Raspbian Lite" install

deploy_authorized_keys.yml

@@ -0,0 +1,15 @@
+---
+- hosts: all
+  tasks:
+  - name: make direcotry
+    file:
+      path: "/home/pi/.ssh"
+      state: directory
+  - name: create empty file
+    file:
+      path: "/home/pi/.ssh/authorized_keys"
+      state: touch
+  - name: put pubkey
+    lineinfile:
+      path: "/home/pi/.ssh/authorized_keys"
+      line: "{{ pubkey }}"