Set Bahmni Login Locale to Spanish by Default

@cristian I replied asking for opinions on how to fix this in a new thread: How should we handle the default language on the login screen? (BAH-319 and beyond)

The order of languages is determined by the locale.allowed.list setting in OpenMRS, not by the order in the locale_languages.json file. (If I were writing this from scratch I would do the opposite, but I don’t think it’s worth changing now since that would potentially require people to reconfigure their implementations.)