Various fixes to the tests:

* Upgrade intern to 2.1.1
* Use SinonJS from master for AMD fixes
* Modify the intern config to ensure all modules are using the correct packages
Convert dojo/io/script tests to intern
Convert dojo/request/registry and dojo/request/node DOH tests to Intern
Fix referencing within test modules
Convert dojo/cache tests from DOH to Intern
Created intern test for dojo/_base/browser.
Create new intern functional tests for dojo/touch
Cleaned up @celikus dojo/Deferred tests
Converted dojo/aspect tests from DOH to Intern
Converted dojo/loadInit tests from DOH to Intern
Don't load _base/browser tests in non-browser environments
Convert dojo/keys tests to Intern
dojo/html DOH to intern conversion
Convert dojo/i18n DOH tests to Intern
Removed unit test code from inside the production dojo/i18n module