Summary:
New language selector on the Account page for logged-in users.
New icon for switching language for an anonymous user.
For anonymous users, language is stored in a cookie grist_user_locale.
Language is stored in user settings for authenticated users and takes
precedence over what is stored in the cookie.
Test Plan: New tests
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3766
Summary:
By default the fallback contains the prefix, which doesn't
work well with a key based translations. Now makeT helper will fallback
to the passed key (without a prefix).
Test Plan: Added new client test
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D3758
