Without the timezone component the time cannot be properly
computed, it can be only guessed. This makes it sure that
the correct timezone is used.

The side-effect of this was that the book content was not shown
after open in the evolution, because the "do-initial-query"
capability wasn't returned.

The previous code used also the 'daylight' global variable, which
could cause movement of the event times. The code was also
overcomplicated, unnecessary, thus it's simplified a bit too.

Future versions of gettext will fail if this header is missing.

Andika Triwidada authored Jun 10, 2016 and Administrator committed Jun 10, 2016

(cherry picked from commit 7f405afb)

To follow network monitor settings with it.