Prepare Scribes for Full Launch

[wgranger]

141 was created to prepare the app for full launch, but other items can also be tracked here.

• [x] FinishedPrompt should not have hard coded text. There are currently no AR/HE translations for the radio buttons.
• [x] Grayed out consensus lines should be shown on the AnnotationsPane

[snblickhan]

• [x] update "Finished?" prompt so volunteers use greyed-out lines as the completion metric (as is the case with ASM)
• [x] update text on modal when volunteer clicks "Transcribe" when already transcribing from "Yes, delete" to "Are you sure you want to start a new transcription? You will lose any work that hasn't been submitted."
• [x] Grey lines will be generated through consensus score in the same method as ASM independent workflow, but the backup number is 7 (i.e. if 7 people have transcribed and no consensus, it automatically goes to grey)