Finish transliteration of Shotridge’s Mosquito.

[jcrippen]

The original and translation are complete, but the transliteration in the Text file of Shotridge’s Mosquito is incomplete. There are some peculiarities of Shotridge’s dialect in his transcription that should be standardized in the text, like his confusion of short /a/ and /e/ writing both as <α> (cf. Carcross Tlingit). Also Boas mangled tone in the first half of the text so it needs to be reviewed and not just copied.