Merge for new attributes support in Build2017 (microsoft#11)

* Add new attributes contract

* Add ListPerson interface and deprecated GetPersons

* Fix comments

* Support EnumString convert by Gson

* Display new attributes in Detection demo page

* Change version for Build2017

* Support list persons and personGroups by parameter "top" only

* Fix comments and use TextUtils join

* Fix comment that using array

* Refine new atrributes' comment

* Support more attributes display in demo

* Display glasses type in demo

Add emotion support for Android SDK and Sample. (microsoft#7)

* Replace old deprecated Project url.

* Add emotion support.

* gradle upgrade.

* Bump version to 1.2.5.