The dialog's Frame field held the engine's zero-based frame, so with frames shown
from 1 the viewer's 00013 opened as 12, and typing 13 went to the frame displayed
00014. It now holds the time in the project's display style (timecode, frames from
Start Numbering Frames At, or feet + frames), which time.set already reads that
way. The now-unused 'Frame' translation rows go.