Major changes in 3.19.92:
* Updated translations for:
* Brazilian Portuguese (Enrico Nicoletto)
* Czech (Marek Černocký)
* Finnish (Jiri Grönroos)
* Galician (Marcos Lans)
* German (Bernd Homuth)
* Greek (Efstathios Iosifidis)
* Hungarian (Balázs Úr)
* Kazakh (Baurzhan Muftakhidinov)
* Korean (Seong-ho Cho)
* Latvian (Rūdolfs Mazurs)
* Lithuanian (Aurimas Černius)
* Polish (Piotr Drag)
* Portuguese (Duarte Loreto)
* Russian (Stas Solovey)
* Serbian (Марко М. Костић)
* Slovak (Dusan Kazik)
* Slovenian (Matej Urbančič)
* Spanish (Daniel Mustieles)
* Swedish (Anders Jonsson)
* Don't attempt to update read-only events (Fosero)
* Timezone handling improvements (Fosero)
* Fix crashes when no end date is passed (Monique Faria, Iain Lane)
* Improved week numbers in Year View (Isaque Galdino)
* Make year view respect Shell's 'show-weeknumber' setting (Isaque Galdino)
* Change month when keynav moves the previous/next month (pandunonu2)
* Improve month view drawing (Fosero)
* Draw a background to the selected days in month view (Fosero)
* Respect 12/24h hour format (Anwar Sadath)
* Fade out past events (Monique Faria)
* Smaller code fixes and updates