upgrade to Azure SDK 2.4, remove unused references
Merge pull request #24 from ckieran/UpgradeTo2.4Sdk

upgrade to Azure SDK 2.4
Ensure masking applied to scrubbed params/values is consistent for form/json. If the form values use the length of the value for masking it's easy to determine which value was selected.
Merge pull request #25 from theteng/ScrubMaskLength

Ensure masking applied to scrubbed params/values is consistent for form/...
test for git write access for CM