I18n support

Great job to translators! :pray:

Tiny UI adjustments may be required:

Looks like Funds section is only partially translated for CZ:

(N.B: Balance is at last hidden on graph, great job Team :muscle:)

Last but not least, wouldn’t it make sense to make language selector accessible from the login / sign up page? I imagine someone you does not speak a single word of English would have a hard time signing up.