Codestyle
Remove commented code
Merge pull request #4145 from wilsonge/patch-5

Remove commented code
[imp] Language (en-GB) standardisation. Closes #4162, closes #4160
[bug] Small fix to fix double slash in "refresh helpsite" url. Fixes #4143
Run PHPCS on Travis, turn off code coverage report on Travis
Merge remote-tracking branch 'joomla/staging' into 3.4-dev