Introduction of a new device class (localhome).

- user-home is on local disk
- additional entry in dolphin: home@server
- display info about localhome on login-screen
- provide unison-config for sync home with home@server
- force user to be logged out immediately after first login, because
  home-dir must exists for bind-mounts on /lmn/media

roles/lmn_localhome/files/lmn-create-unisonconfig.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/bash
+#
+# create ~/.unison/SyncHome.prf if not exists
+#
+set -eu
+
+[[ -f ~/.unison/SyncHome.prf ]] && exit 0
+
+mkdir -p ~/.unison
+
+if id | grep teachers; then
+  NETHOME="$(find /srv/samba/schools/default-school/teachers/ -maxdepth 1 -type d -name "${USER}")"
+else
+  NETHOME="$(find /srv/samba/schools/default-school/students/ -maxdepth 2 -type d -name "${USER}")"
+fi
+
+if [[ ! -f ~/.unison/SyncHome.prf ]]; then
+  echo "# Unison preferences
+label = Sync Home on Server
+path = Bilder
+path = Dokumente
+path = Musik
+path = Videos
+root = $HOME
+root = $NETHOME
+dontchmod = true
+perms = 0" > ~/.unison/SyncHome.prf
+fi
+