[ALOY-726] Update momentjs builtin to 2.1.0, and make translations available

Original PR: [https://github.com/appcelerator/alloy/pull/166](https://github.com/appcelerator/alloy/pull/166)
Ticket: [https://jira.appcelerator.org/browse/ALOY-726](https://jira.appcelerator.org/browse/ALOY-726)

Minor changes and a test app were added to ensure the quality of the original PR.