* Add additional diagnostic message for tsconfig.json
* Add a way to override description for tsconfig.json
* Modify reference tsconfig.json in tests
* Don't have to differentiate cmdline and tsconfig.json description
This reverts commit efe57733ca and 94f9e67a24.
* Remove colon from diagnostic message code 6079
* Remove colon from localized messages code 6079
* Revert "Remove colon from localized messages code 6079"
Not changing files on src/loc because they are managed using automated tools.
This reverts commit e91f52348e.
