ui: Much elm work, such wow

- ui: Fix favicon
- webui: Changes to support serving Elm UI
- Static files now served from `/` mount point.
- Old UI handlers moved to `/serve` mount point, some will still be
  needed by the Elm UI; safe HTML and attachments for example.
- Update dev-start.sh for new UI, with tip on how to build it.
- ui: Detect browser host:port for websocket URL,
- webui: Remove unused mailbox handlers, rename routes
- Many routes not needed by Elm UI.
- `/serve/mailbox/*` becomes `/serve/m/*`.
- webui: Impl custom JSON message API for web UI,
- ui: Refactor Mailbox view functions,
- ui: Add body tabs for safe HTML and plain text,
- webui: Format plain text for new UI,
- ui: List attachments with view & download links,

etc/dev-start.sh

@@ -6,13 +6,21 @@ export INBUCKET_LOGLEVEL="debug"
 export INBUCKET_SMTP_DISCARDDOMAINS="bitbucket.local"
 export INBUCKET_WEB_TEMPLATECACHE="false"
 export INBUCKET_WEB_COOKIEAUTHKEY="not-secret"
+export INBUCKET_WEB_UIDIR="ui/build"
 export INBUCKET_STORAGE_TYPE="file"
 export INBUCKET_STORAGE_PARAMS="path:/tmp/inbucket"
-export INBUCKET_STORAGE_RETENTIONPERIOD="15m"
+export INBUCKET_STORAGE_RETENTIONPERIOD="3h"
 
 if ! test -x ./inbucket; then
   echo "$PWD/inbucket not found/executable!" >&2
-  echo "Run this script from the inbucket root directory after running make" >&2
+  echo "Run this script from the inbucket root directory after running make." >&2
+  exit 1
+fi
+
+index="$INBUCKET_WEB_UIDIR/index.html"
+if ! test -f "$index"; then
+  echo "$index does not exist!" >&2
+  echo "Run 'elm-app build' from the 'ui' directory." >&2
   exit 1
 fi