Support country code locales

[aenario]

Some contributors would like to translate the cozy-mobile application into columbian spanish. However for now we drop the country part of the locale value.

It would be nice to try with the country, and fallback to same language if we dont have it.

cozy-mobile/src/app/lib/translation.coffee

Lines 15 to 21 in 135d941

	[@language] = locale.value.split '-'
	translations =
	try
	require '../locales/'+ @language
	catch e
	@language = @DEFAULT_LANGUAGE
	require '../locales/' + @language