set cloudcare default language to the default language of the first app
set cloudcare default language to the default language of the first app

(if not specified by the user)

The best plan would actually be able to allow each app's default to be
used just in time if the user doesn't specify a language, but this was
a little hairy, so using a workaround that should cover 90% of cases
where there's only 1 app.

gmimano/commcaretest,SEL-Columbia/commcare-hq,qedsoftware/commcare-hq,puttarajubr/commcare-hq,gmimano/commcaretest,puttarajubr/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq,puttarajubr/commcare-hq,qedsoftware/commcare-hq,SEL-Columbia/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,gmimano/commcaretest,qedsoftware/commcare-hq,puttarajubr/commcare-hq,SEL-Columbia/commcare-hq