Add features to localize Welcome-Guide and Telemetry-Consent

[juggernautjp]

Requirements for Contributing a Bug Fix

This fix enable atom-i18n to localize "Welcome Guide" and "Telemetry Consent" views.

Identify the Bug

atom-i18n can not localize both "Welcome Guide" and "Telemetry Consent" views.

Those bugs are opened as the Issue #319.

Description of the Change

• add feature of localizing 'Welcome Guide' and 'Telemetry Consent' (so, you can localize them)
  • add 'consent.cson' and 'guide.cson' file to def/{template, }/ directory
  • localize 'consent.cson' and 'guide.cson' file in Japanese
  • add 'consent.cson' and 'guide.cson' specification to spec/config.js file
  • change def/*/welcome.cson from json format to cson format
  • add lib/{consent, guide}.js, and fix a minor bug of lib/welcome.js
• Also, end-of-line code of all files that are modified, are 'CRLF' (Windows format)
• The branch is add/localize-welcome-views

Alternate Designs

None

Possible Drawbacks

User might not be be able to change telemetry consent settings.

Verification Process

1. All locale files, such as def/ja/welcome.cson, are tested with npm run validation -- --locale.
2. All locale files are tested on Atom editor with atom-i18n, by manually changing locale.

Release Notes

• "Welcome Guide" and "Telemetry Consent" are able to be localized in your language.