Split tests into Address Normalization and Address Validation tests

-Create a class for address normalizaiton
Finished up address validation and normalization, and their tests
Merge branch 'master' of https://github.com/CruGlobal/dss-middleware
Merge branch 'master' into angular
Update cart integration test, it was broken b/c we cleared some data out of DEV
Merge branch 'master' of https://github.com/CruGlobal/dss-middleware
Merge branch 'master' into angular
Added comment functionality