Implement dynamic version injection

Pure frontend strategy using env variables

Inside the Docker image:

```Dockerfile
RUN VERSION=$(grep version setup.py | sed 's/^.*version="//g' | sed 's/\",//g') &&\
npm run build --env.VERSION=$VERSION --env.COMMIT=$COMMIT
```

Inside the webpack:

```javascript
module.exports = function (env){
if (env === undefined) {
env = {}
}
if (!env.COMMIT) {
env.COMMIT = 'x.x.x'
}
if (!env.VERSION) {
env.VERSION = PACKAGE.version
}
...
```

Then use the following to get version

```javascript
const PRESENT_COMMIT = process.env.COMMIT;
const PRESENT_VERSION = process.env.VERSION;
```

Start by locating the Dockerfile, webpack configuration, setup.py, and the npm build entry point referenced in the issue. Trace how VERSION and COMMIT reach the frontend, then verify that a Docker build injects both values and that the frontend can read them through the shown environment variables.

Written by the indexing model from the issue text.