Removes intentional Realm file deletion to avoid unintentional Realm file deletion, though the latter remains something of a mystery.
* Configure Realm with the full path to the file
* Remove all Realm.open calls in AuthenticationService in favor of passing the
context/provider copy of realm (only one realm instance)
* Only delete the realm file on sign out if deleting realm contents fails for
some reason
* Replaced deleteRealm with semantically more accurate clearRealm
Closes#373
* Set up logging for user signing in and out
* Set up button to email debug logs in About; closes#357
* Fix bug where signOut called too many times in App; code cleanup
* Add mocks to RNFS to get Auth tests passing
* Add simple test to make sure mailer is called on button press
* Added a file sharing fallback when Mail is not available in iOS
* Rename log extension
Co-authored-by: Ken-ichi Ueda <kenichi.ueda@gmail.com>
