generate screenshots for translators

[cfm]

Description

As we build new automated testing for the SecureDrop Client and Workstation, we should generate screenshots of the SecureDrop Client in action, as we do for the SecureDrop Server, so that translators can see source strings in context.

How will this impact SecureDrop users?

Users will interact with the SecureDrop Client UI in more idiomatic, context-aware translations.

How would this affect the SecureDrop Workstation threat model?

No threat-model implications.

User Stories

As a translator, I want to see the strings I'm translating in the SecureDrop Client UI in context.