SUPPORT-1955: Always default to inProduction on a real device if we don't have an embedded.mobileprovision file to read.

Conflicts:
	Airship/Common/UAConfig.m
Spelling.
Updat changelog
Update version 3.0.3
Update detectProvisioningMode doc
Update comments
Merge pull request #400 from urbanairship/release-3.0.3

Release 3.0.3