Rewrite a "Start Tails" page inlining bits of /install/inc/steps/restart_first_time.inline
While working on the installation assistant we rewrote completely the instructions on restarting Tails. Now they are much better but only embedded in the assistant’s scenarios. So I’m removing the previous one in be0011c4. It still makes sense to have a separate page dedicated to restarting Tails but this will require some work, we’re late and overtime on the assistant, so let’s say it’s not a blocker for now.