Improve account status msg field & add history

- Up to 5 previously set status are now shown under the field
  for quick access; the history is shared between accounts

- When focusing the field, the text gets auto-selected since most of the
  time we want to set a totally different status, not edit the current one

- Typing in the field will autosuggest any matching history entry

- Keyboard focus now skips the "apply" button, since we can just hit
  enter in the field

src/icons/thin/previously-set-status.svg

@@ -0,0 +1,3 @@
+<svg height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg">
+    <path d="m24 12c0 6.627-5.373 12-12 12s-12-5.373-12-12h2c0 5.514 4.486 10 10 10s10-4.486 10-10-4.486-10-10-10c-2.777 0-5.287 1.141-7.099 2.977l2.061 2.061-6.962 1.354 1.305-7.013 2.179 2.18c2.172-2.196 5.182-3.559 8.516-3.559 6.627 0 12 5.373 12 12zm-13-6v8h7v-2h-5v-6z"/>
+</svg>