Fix dolphin places config (user-places.xbel)

Existing dolphin configs can be incorrect for two reasons:
- Instead of the class identifier, a * was incorrectly entered in the home@server URL.
- If the student has changed classes, the old class name is still in the home URL.

lmn-patch-dolphin.sh no longer enters a * in the home@server URL.
lmn-fixhome-dolphin.sh will fix existing configs.

roles/lmn_fvs/files/lmn-dolphin.sh

@@ -1,3 +1,6 @@
 if [[ "$UID" -gt 10000 ]] && [[ ! -f ~/.local/share/user-places.xbel.lmn ]] ; then
     (sleep 30 ; lmn-patch-dolphin.sh) &
 fi
+if [[ "$UID" -gt 10000 ]] && [[ -f ~/.local/share/user-places.xbel ]] ; then
+    lmn-fixhome-dolphin.sh
+fi