feat(layout): drag the widgets into the order you want

A list in Appearance, in the row's own order, dragged to rearrange —
with QSO entry and the F1-F5 panel at its head, locked. They are not in
that row at all, and letting an operator push the thing they type into
behind a rotator dial is not a preference, it is a trap.

Implemented with flexbox ORDER rather than by moving the JSX: in a
component this size, reordering the tree would have moved every
condition, ref and hook with it. Each slot keeps its place in the source
and receives an order property, so a widget switched off still holds its
rank and returns where the operator left it.

An unknown key from a later version joins the end rather than the front,
and a key that no longer exists is dropped — an old preference can
neither reorder a widget it has never heard of nor hide one. Opens
0.27.10.

changelog.json

@@ -1,4 +1,14 @@
 [
+  {
+    "version": "0.27.10",
+    "date": "",
+    "en": [
+      "Widget order (Settings → Appearance): the row to the right of the entry can be rearranged by dragging. QSO entry and the F1-F5 panel head the list, locked — they are not part of that row and nothing should be allowed to push what you type into behind a rotator dial. A widget you have switched off keeps its place and comes back where you left it, and the main view follows as you drag."
+    ],
+    "fr": [
+      "Ordre des widgets (Réglages → Apparence) : la rangée à droite de la saisie se réorganise par glisser-déposer. La saisie du QSO et le panneau F1-F5 ouvrent la liste, verrouillés — ils ne font pas partie de cette rangée, et rien ne doit pouvoir repousser ce dans quoi vous tapez derrière une boussole de rotor. Un widget désactivé garde sa place et revient là où vous l’aviez laissé, et la vue principale suit pendant que vous glissez."
+    ]
+  },
   {
     "version": "0.27.9",
     "date": "",