Allow setting a separate repository browser url for translation files

### Describe the problem

We use a separate repository for translation files, different from the source string repository.

For example in :

- The source string comes from
- The translation file comes from

The "Souce string location" and "Translation file" links on that page seems all based on the "Repository browser" setting. So one of the two is always wrong.

### Describe the solution you would like

Add a separate repository browser setting for "Translation file".

### Describe alternatives you have considered

_No response_

### Screenshots

_No response_

### Additional context

_No response_