fix(translations): Translate "Sign In with " string into a handful of additional languages (de, es, fr, nl, pt, pt_BR)

[rudokemper]

Description

This PR translates this "Sign In with " string for signing in with oauth into a handful of languages: Dutch, German, Spanish, Portuguese, and French. I did not have the language skills to do more than that.

I saw that this string was translated into Slovenian and followed directly after translations for a "Register" string, so I followed suit and placed my translations after "Register" for each language.

ADDITIONAL INFORMATION

• [ ] Has associated issue:
• [ ] Is CRUD MVC related.
• [ ] Is Auth, RBAC security related.
• [ ] Changes the security db schema.
• [ ] Introduces new feature
• [ ] Removes existing feature