Adds WebAuthBroker native authentication UI on Windows8/8.1/WP8.1 platforms
Update CHANGELOG.md
Dedupes the code in Platform.WinJS by requiring WebAuthBroker module
Merge pull request #453 from MSOpenTech/dev

Adds WebAuthBroker native authentication UI on Windows8/8.1/WP8.1 platforms
[JS] Update headers for cordova scenarios
Merge pull request #460 from phvannor/dev

[JS] Update headers for cordova scenarios
WinJS Quickstart filter causes issues in some tutorials and is not necessary
Merge pull request #464 from toddreifsteck/master

WinJS Quickstart filter causes issues in some tutorials and is not needed
Fix the WinJS quick start in tt file rather than only js file

JS file is not used in actual build.
Merge pull request #465 from toddreifsteck/master

Fix the WinJS quick start in tt file rather than only js file
Merge remote-tracking branch 'upstream/master' into dev