Closes #4916 Fixes #4714
closes #2359
This reverts commit e64c0676362451f1861ea8b2439fc191831fa702.
// FREEBIE
1) Allow imports from the stock SMS database at any time. 2) Provide plaintext export support, in a format compatible with the "SMS Backup And Restore" app. 3) Fix the DB weirdness on encrypted restore that previously required killing the app.