adds the functionality of the feature. This is a follow-up issue to improve the process, ui and help text so that people will know when to change the site default language and when to change the default language in the detection and selection tab.
A) to take the change default language off of admin/config/region/language and put it on it's own page. There, help text can exist that explains that changing the site default language is something to be done while site building and not something to be changes on a site that is already in use. Changing the default language in the detection and selection tab is the best practice on a working site. There can also be text there to explain in what rare circumstances the site default language should be changed on a working site.
B) add help text to admin/config/region/language that explains not to change the default on a working site and to use the detection and selection tab instead.
Note: "improving" the default language change process will make it harder to change the site default language. But that is what is needed, since we dont want it to be easy to change the site default language on a working site.
PASSED: [[SimpleTest]]: [MySQL] 49,274 pass(es). View