helloworld: update to API19

toView() is no longer supported. Use one of the getView()
methods instead

The TimelineManager class and support for static cards from
the GDK have been removed.

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
helloworld: fixup the sdk version for API19

need to use API19 from XE16 firmware

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
helloworld: update to SDK API 19

Signed-off-by: Jack Tan <jiankemeng@gmail.com>