The effects of "sync_on_start" have been nullified. The new flag
is not currently used, but it will be reactivated in a follow up
commit.

Use new statuses 'SETTINGS READY' and 'READY'.

Sections affected: Cloud, What to sync

* Translate mistranslated or untranslated phrases to Greek
* Settings error phrases are now configurable
* Rephrase based on user feedback

Send message when sync fails, either at staging or pulling, and keep the
heartbeat record, so as to prohibit consecutive unsuccessful syncings.