Add --api-keys-db-path argument

* Add API Keys DB path to command & env vars

* Create API Keys DB directory if not exists before sqlite connection & Add docker-compose example

Expand CUDA Support to more GPUs

Add info on adding cuda to the container path if needed

fix: fix race condition in settings and langs

Add CUDA docker version

Add lt.vern.cc instance to instance list

improve translation of punctuation

Upgrade argos-translate-files

Add support for .epub and .html

Upgrade argostranslate

Include `dark-theme.css`

Create dark-theme.css

Update README.md

File translation via Apache proxy needs "ProxyPreserveHost On", which is "Off" on some distributions (RHEL8 for instance). Else window.location.host will point to the container IP instead of the host.

improve translation formating

Revert "improve translation formating"

improve translation formating