[ALOY-923] TextField with proxy property causes compile error as ItemTemplate

[ALOY-923] Test App
[ALOY-981] Implement KeyboardToolbar for TextArea
Merge pull request #429 from feons/ALOY-923

[ALOY-923] TextField with proxy property causes compile error as ItemTemplate
[ALOY-923] update testing app for mobileweb, android
Merge pull request #431 from skypanther/ALOY-923b

[ALOY-923] update testing app for mobileweb, android
Merge pull request #430 from feons/ALOY-981

[ALOY-981] Implement KeyboardToolbar for TextArea
[TIDOC-1721] Deprecate sample widgets
Merge pull request #432 from bhatfield/tidoc-1721

[TIDOC-1721] Deprecate sample widgets