improv: update libcosmic with wallpaper page UI improvements

i18n/cs/cosmic_settings.ftl

@@ -18,7 +18,6 @@ appearance = Vzhled
 notifications = Oznámení
     .desc = Nerušit, oznámení na zamykací obrazovce, a nastavení pro specifické aplikace.
 
-
 ## Desktop: Options
 
 desktop-panel-options = Plocha a Panel
@@ -111,8 +110,6 @@ wallpaper = Tapeta
 all-displays = Všechny monitory
 colors = Barvy
 fit-to-screen = Vyplnit obrazovku
-stretch = Roztáhnout
-zoom = Přiblížení
 
 x-minutes = { $number } minut
 x-hours = { $number ->

i18n/en/cosmic_settings.ftl

@@ -228,11 +228,10 @@ add-image = Add image
 all-displays = All Displays
 colors = Colors
 dialog-add = _Add
+fill = Fill
 fit-to-screen = Fit to Screen
 open-new-folder = Open new folder
 recent-folders = Recent Folders
-stretch = Stretch
-zoom = Zoom
 
 x-minutes = { $number } minutes
 x-hours = { $number ->