language: Remove "Use blah"

It hasn't really worked for anybody. It doesn't translate well,
it doesn't sort well, and it doesn't really help anybody.
language: Fix a memory leak
language: Adapt better matching from cc-language-chooser fork

Originally written by Rui Matos. Hopefully soon we can merge
our changes back with cc-language-chooser.
language: Don't use is_extra for sorting
language: Allow using multiple words to filter languages

All words must match.

Originally written by Rui Matos.
language: Remove remnants from old GtkTreeModel-based picker
language: Split the language chooser out into its own widget

This will hopefully make it easier to share with the control center.
language: Remove extra guard

This isn't necessary anymore.
language: Add a property for showing-extra

The control center will use this to determine whether it should
make its dialog resizable.
language: Rebrand gis-language-chooser as cc-language-chooser

gnome-control-center will be the upstream for this widget, so
it makes sense to rebrand it.
language: Reindent and reformat cc-language-chooser to g-c-c guidelines

This should just be a whitespace change with no functional changes.
language: Remove an unused field
language: Fix a minor coding style issue

g-c-c doesn't like this style.
language: Fix the value of is_extra

The logic here was just wrong before.
language: Rearrange another tiny piece of code
language: More code style fixes
Updated Tamil translation
Updated POTFILES.in
Updated Hungarian translation
Updated Danish translation