Currently, multi-day events are shown as individual appointments on each
day. This patch ellipsizes multi-day events to indicate continuation on
the prior or following day (or other time-period.)
The time label spot is now replaced by a box layout that contains the
prefix ellipsis label, the time label and the postfix ellipsis label.
In order to keep the alignment, ellipses are merely invisible (zero
opacity) when hidden.
The ellipses are styled using the events-day-time-ellipses class which,
by default, take the color of the event text.
When RTL is used, the box contents are adjusted accordingly (clutter
does that for us).
An event spanning three days now displays "...All Day..." in the
calendar on the second day.
https://bugzilla.gnome.org/show_bug.cgi?id=727302
6c67f26e7d