prevent creating clocks for locations with no timezone.

Here, by creating a new clock for a defined and matched location the OK button
of the dialog remains disabled, if the time zone for this location is not
known, so the user cannot add such a broken clock. In this case a
warning message is produced.
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=699311
Updated Russian translation
Updated Russian translation
Added Odia into the list.
Updated Odia Translation.
Move separator in the app menu
Back out the application service split

The infrastructure is not there yet, among other things:
 - makes debugging hard (no "simple" print)
 - breaks icon detection in gnome-shell
 - requires jumping through oops to work in jhbuild

The is work is still available in the wip/appservice branch and I still
hope to merge it later, but right now it is getting in the way of new
contributors.
Update libgd
Store window size and panel state with gsettings

https://bugzilla.gnome.org/show_bug.cgi?id=700034
Updated Galician translations
Updated Spanish translation
Use the new GtkBuilder support in GWeather

With that, we can move the location entry to Glade and simplify
our code.

https://bugzilla.gnome.org/show_bug.cgi?id=700642
Updated Norwegian bokmål translation
Updated Hebrew translation.
Updated slovak translation
updated kn translations
Updated Czech translation
Tajik updated
Tajik updated
Updated Slovenian translation