Right now time zones are only shown in the tooltip, which is annoying since the tooltip
times out aftew a few seconds, so it often closes before I can find the timezone I'm
This patch adds a view for the current tomezones in the expanded representation, and
implements a mockup in https://bugs.kde.org/show_bug.cgi?id=395655 showing a proposal
for how to present this information.
The Expanded Representation is also ported to Layouts in order to make this task easier.