Bump go version to 1.2 for travis builds.
Always log flood sending errors, and always increment the messages
sent count even when there was an error.
Keep track of delivered count.
Merge pull request #570 from mozilla-services/flood-count-errors

Always log flood sending errors, and always increment the messages
Merge pull request #569 from mozilla-services/travis-go-1.2

Bump go version to 1.2 for travis builds.
Merge branch 'dev' into default-severity

Conflicts:
	CHANGES.txt