[Scripts] Add override flag to fetch all translations
[Scripts] Add override flag to fetch all translations

This adds a runtime override flag (`--ignore_completion`) to the
`update-translations.py` script that allows for the fetching and
processing of ALL available translations, regardless of their completion
percentage.

Darknet-Crypto/Darknet,Darknet-Crypto/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet