Fixes #11984 - Update the plugin to use the latest gettext from core,and re-extract the strings.
Once this is merged, the project needs to be added to transifex.
fixes #8100 - make engine and asset precompilation name consistent
Ensures that when precompiling, both the assets and the manifest end up under'foreman_docker' rather than one ending up under 'foreman_docker_engine'. Notmuch functional effect except it keeps everything in one dir.
Refs #7642 - Create docker image and tag models
Clean up Gemfile and gitignore