* Web & API server versioning system. Displayed on UI.
* Remove some debugging code.
* Integrated backend version into GitHub Action & Docker build workflow using env variables.
* Fixed web container environment variable name.
* Revise Dockerfiles for GitHub Actions workflow.
* Added system information page to admin panel with version info. Updated github workflows to include tagged version, and corresponding changes in the dockerfiles and codebases for web&backend to use env variables if present. Changed to 'dev' naming scheme if no env var is present to indicate local setup. Removed version from admin panel header.
* Added missing systeminfo dir to remote repo.
