Bug 1069214 - added accessibility improvements for day/week view.

> how do I trigger this? was not able to do it with the screen reader on the device. the hours are selectable but I wasn't 
able to double tap to create an event.

So this can only work with the double tap on the all day event cells, since they actually have a corresponding element. This is a stopgap for the current implementation, unfortunately. Without actual elements it's not possible to double tap on what looks like hour cells. We had similar issues with other apps, and as long as there's an alternative way to input events (via '+' here) it should be reasonable.

> another thing is that you can browse between the hours but it doesn't list if the hours contain events.. I think we should skip the hours if it doesn't contain events (maybe just make the swipe jump between events and say "no events" if there are no events on that day??)

Yeah we were considering implementing aria-controls and aria-owns for the solutions that you described but we do not yet support it in gecko a11y. I think it is still useful to have the hours, because the screen reader can be operated in 2 modes: with sequential navigation and also explore by touch. So when the users explores the screen with touch they would be able to explore whether there are events around the hour slot that was just read.