getEnvironment unittests (for env.js)

[code-sur]

This pull adds unittests for env.getEnvironment()

checked with:

$ check sugar-web

Note: full check is currently broken

[rogemita]

Summarizing:

• Squash js-beautify changes on env.js file
• "in sugar mode" describe
• minimize commit message to 72 cols
• Are you ok with https://github.com/rogemita/sugar-web/commit/85853313eeb3a683ba31e6d8c25d669e4974b626#diff-a6dc5272a208f778597d2f6f64aa6276R89
• Are you ok with https://github.com/rogemita/sugar-web/commit/997c42f5e033a23a78aa318b658560e435512969#test-envspec-js-P10

Thanks!

[dnarvaez]

Yup sounds good.

[rogemita]

try2: https://github.com/sugarlabs/sugar-web/pull/95