previous tunnel fix was incomplete

- Add logo to language picker panel
- Add progress bar to panels

match the SigType selection style, and prep for PQ
add title to default

Dockerfile: migrate to eclipse-temurin:17-alpine base image

instead of package.html and Dummy.java

Correct copy and paste error: jre variant is sufficient for running the app. While I am here: provide qualified image reference to make podman happy

- Since the entire builder is discarded anyway there is no real point in
  uninstalling build-time package dependencies.
- Install ant from official pre-built binaries as well. Make version
  configurable.

ref: http://i2pforum.i2p/viewtopic.php?p=3399

add test servlet

susidns: Add bubble support

See merge request !233

(prep for PQ)

replace out.write(buf.toString) with out.append(buf)
to eliminate extra copy and object churn

seen live on the net

broken yesterday by BuildMessageGenerator change

SusiDNS: Reduce memory usage in AddressBean

See merge request !232