Implement glossary for DeepL

[psmits1567]

DeepL has been implemented for translation.
That is a great improvement, but could be even better. DeepL has the possebility to keep a glossary, and use that when translating. If this could be implemented, then the quality would even be better.
The glossary is connected with your DeepL key. So unfortunately it cannot be for general usage
To implement this feature, it would require new functions

1. Upload a glossary
2. Delete a glossary (could be done when uploading)
3. Indicate the glossary ID in your profile.
4. When the translation request is made sent the glossary ID with the request. (Already requested)
5. Maybe use the existing glossary from the locale, but better would be to upload your own file.
6. Possible problem could be a cors issue, because the request is made cross domain