Dates are common enough every implementation will use it.

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Implemented date picker

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Implemented slider picker

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Documentation fixes

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Cleaning up a few return values

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Runnable dogfooded tests, now there's an idea...

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
More specific error, documentation fix, better return value?

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Message box tests

Signed-off-by: Chris Riddoch <riddochc@gmail.com>