Synchronises triggers with TapPoint. You should call this method after authenticating with TapPoint.
A successful sync will result in the application being notified of any triggers that were added and/or removed
since the last sync.
The sync can fail for several reasons, for example if the application is not authenticated with TapPoint, or the
device does not have an active and working internet connection. Also, calling this method while a sync is already
in progress will result in being notified of a failed sync.
listener - to be notified of the sync result. Must not be null.