Email and SMS settings to local settings. Fixed email validation

Email and SMS are now more configurable. Previous validation for email didn't work.
Looks like the existing code wants phone numbers to start with `"00"`, which is what `"+"` expands to in Europe. Potential improvement when everything else is done (if we allow `"+…"` I think we still have to expand it to `"00…"` for the Kannel SMS gateway).