* 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.

If missing, daemon fails to start on osx (packaged with platypus).

Keep the syncer even in an error status. Don't init_sync in force_sync,
since we already have a syncer.