Adds examples for a variety of Material-only control styles including underlined Spinner and discrete SeekBar. Groups controls into cards. For the old-style controls, moves some run-time setup tasks into XML. Bug: 19352193 Change-Id: Ibb1c82ac6ecaca3b93f3acfd65ef67cd9784fef4
Adding a new folder in development/samples is not enough to have it be packaged with the SDK. Make sure to edit development/build/sdk.atree to add the sample to the SDK build.