Fix bug in LogFormatter (we were quashing the stack trace!)
Ensure we call NikePlus.endSync() from our ServletUploadDataType to always end our Nike+ session.
Modified how we extract garmin activity-id from a String and added unit-tests for it.

We now use regex to get the final set of digits.
Add HttpStatusCodeRetryStrategy and use it to retry on 503 responses for our data-sync requests to Nike+