[zanata/zanata-platform] 1b552a: refactor: remove en-us, use en default.

[GitHub]

  Branch: refs/heads/efloden/i18n-workflow/ZNTA-2409
  Home:   https://github.com/zanata/zanata-platform
  Commit: 1b552a5c23378ec886f86c8a8d09702c5e0481e8
      https://github.com/zanata/zanata-platform/commit/1b552a5c23378ec886f86c8a8d09702c5e0481e8
  Author: efloden <efloden at redhat.com>
  Date:   2018-03-22 (Thu, 22 Mar 2018)

  Changed paths:
    M server/zanata-frontend/src/app/editor/index.html
    R server/zanata-frontend/src/app/editor/messages/en-us.json
    R server/zanata-frontend/src/app/editor/messages/index.js
    M server/zanata-frontend/src/messages/en.json
    M server/zanata-frontend/src/messages/ja.json
    M server/zanata-frontend/src/scripts/extract-messages.js

  Log Message:
  -----------
  refactor: remove en-us, use en default.
remove unused messages directory
extract messages script to ignore message descriptions until handled as JSON format by Zanata