[WorldclockView] Read delete/reorder list item as one object

[WorldclockView] Read delete/reorder list item as one object

Previously label of time and meridiem were created on their own
and pushed into the swallow part of the items layout. It caused
screen reader frame focus at the beginning on the whole item,
next on the checkbox and again on the time label and am/mp label.
This kind of behaviour was missleading and I've moved those labels
into edc textblocks the same way as did it in worldclock view in
location list.

Change-Id: I235da09066f85895ae0db5f1b69168169883fa81