Add version string to all api/webhook responses
Resolves https://github.com/the-blue-alliance/the-blue-alliance/issues/1091
Move versions to ints, rather than strings.
Makes for easier processing on the clinet side
Format version header to string
Merge branch 'master' into api-version
Merge pull request #1092 from phil-lopreiato/api-version

Add Version Header to API/Webhook responses