'discourse remap' ought to notify app servers of any site settings that changed

[supermathie (Michael Brown)]

Currently discourse remap X Y does not notify app servers that a site setting changed.

It should notify the app servers if any site settings change so they can reload the new setting.

[sam (Sam Saffron)]

Because this is just so so rare, we should unconditionally trigger a site setting refresh on remap, there is probably an API for this but if not just flicking a setting from true to false to true will do the trick.

[zogstrip]

I agree with @sam that we should unconditionally refresh the site settings.

Refresh site settings after a remap