"Set up an administration password" and "How to use bridges in Tails" doc pages are not updated for the new Greeter

https://tails.boum.org/doc/first_steps/startup_options/administration_password/ talks about “Yes” and “Forward” buttons.

Same for “How to use bridges in Tails” on https://tails.boum.org/doc/first_steps/startup_options/bridge_mode/.

Candidates for core work tech writing?

Related issues

• Related to #14879 (closed)
• Has duplicate #15068 (closed)
• Has duplicate #15115 (closed)
• Has duplicate #14920 (closed)
• Blocks #14758 (closed)

Original created by @intrigeri on 14790 (Redmine)