Don’t translate IE error modal, if there are errors during the `connect` process the `IntlProvider` doesn’t get set up and the error modal can’t be shown.

Added:
- Opera (including Opera Mini)
- Silk

Not Added:
- Vivialdi - appears to be ‘Chrome’ in `platform.name`

- implements welcome to the preview modal, and unsupported browser modal.
- will need assets updated in Jan.