* retry all unsuccessful map calls after waiting 8 seconds (spinner continues to indicate loading state)
* also logged-in users can be rate limited: add dedicated error message
* don't log users out when requests return 401/403 (except on the _get own user data_ request, which would indicate that the oauth token was revoked): it's better to show the error message if a legitimate api call was actually unauthorized
closes#10299
Update `text` functions to `html` to support inserting the `span` elements
Specify `html: false` for various instances where a `span` is not desired, e.g. `placeholder` and `title` attributes
Consolidate localization behavior and init to a coreLocalizer function and singleton
Explicitly support `en-US` locale
Rename coreData to coreFileFetcher and export a singleton rather than using a property of coreContext
Add `apiConnections` property of coreContext to simplify adding a source switcher
Replace some init functions with re-callable, promise-supporting `ensureLoaded` functions
Make coreContext itself load the UI if a container has been specified at init time
Fix code tests
1. All services are disabled in testing now to prevent network accesses
2. Only services are enabled when needed to test something
3. Many changes throughout code to allow iD to run with services disabled
(e.g. check for osm service instead of assuming context.connection() will work)
4. Actually export the services so we can disable and enable them
* if 509 Bandwidth Exceeded / 429 Too Many Requests, prompt for login
(closes#2262)
* if 400 Bad Request / 401 Unauthorized / 403 Forbidden - logout and retry
(closes#3546)
