EVAC LAYER v0.2.3

v0.2.3 — drill wording stays on drill bulletins

A fix on top of v0.2.2; nothing else from develop is included.

• Writer text written for a JMA drill bulletin was reused for a normal bulletin of the same class
  (hazard / template / level). The screens then carried "DRILL:" and its counterparts in every
  language, matched a class approval that had been given on a drill bulletin, and could go out by
  themselves. Writer records now carry the bulletin's status (normal, drill, test) and are reused
  only for a bulletin of the same status.
• The Verifier stops a screen that shows drill wording on a bulletin that is not a drill.
• Who is affected: an installation where a class was approved from a drill bulletin, for example
  after pnpm -F app demo:approve 22424-demo. A normal bulletin of such a class now waits for an
  approval of its own.
• schema/ and the feed are unchanged from v0.2.2.