* Add test for check JSON data file prettification
* Move prettification test to out linting script
* Add other newline in error message to improve readability
* Invert the diff to show the solution to the user
* Add 'jest-diff' as direct dependency
* Remove annotations and colors
* Replace CRLF newlines with LFs in JSON prettification lint
* Restore colors in JSON prettification lint
* Add a script for the linting that cannot be accomplished by our other linters
Currently this only contains linting for whether our icons are alphabetically sorted
* Add our own linting to Travis
* Fix Let's Encrypt being incorrectly sorted
* Intentionally break sorting to test CI
* Revert "Intentionally break sorting to test CI"
This reverts commit 55e4070b3c3294cff306fcc138ce247843130c35.
* Explain in CONTRIBUTION.md how to sort metadata
