Add an app folder setting

This schema is needed for gnome-shell and gnome-software to
communicate about application folders, which are configured
in gnome-software and displayed in gnome-shell.

https://bugzilla.gnome.org/show_bug.cgi?id=720698
Update Chinese simplified translation
Updated Galician translations
Updated Hebrew translation
Updated Greek translation
Updated Spanish translation
3.11.4
Updated Lithuanian translation
Fixed double word "this"
Updated Czech translation
Updated Brazilian Portuguese translation
Revert "Updated Brazilian Portuguese translation"

This reverts commit f3e8e88484b79adffa9f55adec1fcfcc57d09203.
Updated Brazilian Portuguese translation
Capitalize "IDs"
Updated Spanish translation