The SoupSession is shared between all GWeatherInfos, so it's
extremely bad to abort it, expecially because we do when infos
are finalized. Instead, have each info keep a list of pending
SoupMessages and cancel them.

Aborting a SoupSession can call out to arbitrary user code
through the updated signal, and this is not allowed in finalize.
Do it in dispose instead.

Otherwise we can't reuse the translation and trigger a
string freeze break.

- China [#721446, dujiulun2006]
  * Jinan

- Ireland [#720871, Sergey V. Udaltsov]
  * Athlone
  * Bray
  * Carlow
  * Carrick on Shannon
  * Castlebar
  * Cavan
  * Clonmel
  * Drogheda
  * Dundalk
  * Ennis
  * Galway
  * Kilkenny
  * Lifford
  * Limerick
  * Longford
  * Monaghan
  * Mullingar
  * Naas
  * Navan
  * Nenagh
  * Newbridge
  * Portaloise
  * Roscommon
  * Sligo
  * Swords
  * Tallaght
  * Tralee
  * Trim
  * Tullamore
  * Waterford
  * Wexford
  * Wicklow

- Italy [#720777, Pierpaolo Vittorini]
  * L'Aquila
  * Pescara (corrected)

- Russia [#723434, Artem]
  * Rybinsk
  * Yaroslav

- Slovakia [#722301, riko442]
  * Dubnica nad Váhom
  * Martin
  * Nové Zámky
  * Partizánske
  * Prešov
  * Ružomberok
  * Spišská Nová Ves
  * Svidník
  * Trenčín
  * Žilina

(Cherry-picked from master, and with translation marks removed)

Add Izhevsk (Russia)
Add Dourados (Brazil)

Not translated because of string freeze.

Setting the location of the entry to NULL is documented to unset the
location, but unfortunately in practice it caused a crash in
gweather_location_equal()

https://bugzilla.gnome.org/show_bug.cgi?id=708586