Relocate the TestFlight SDK into the External folder

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Update the secret configuration template with the test flight token

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Update the configuration header

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Tweaks to the protected configuration.

* Add the TestFlight token as a const value

* Remove the configuration xcconfig

* Update the secret repo reference

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Move the Configuration files into a subdirectory of "/Common" and tweak the run script so that any updated configuration files are copied from the private repo.

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Remove resources from the Externals that were accidentally grabbed by the copy bundle resources phase.
Merge remote-tracking branch 'origin/3.4-dev' into 3.4/master