This makes minimal changes to TokenedService, even though there is obvious
refactoring that can be done to reduce duplication, because the class is
currently untested.
* src/server/service/TokenedService.js (_getQuoteToken, generateToken,
killToken, acceptToken, completeToken): Expect promise.
* src/server/token/TokenDao.ts (updateToken, getToken): Remove callback
param, return Promise.
* test/server/token/TokenDaoTest.ts: Use promises.
c90757a6d3