- Doxygen documentation improvements.
- Fix USB serial devices with Linux kernel 2.6.21, we don't use ASYNC IO, so we should not set it.
- Tell user that he should enter text for SMS.
- Cleaned up transatable strings.
- Improve networks listing.
- Allow networks to be listed by country code.
- Add flag to SMS folders whether it is outbox.
I currently do not plan further testing release before next stable one, but in case some serious problem is found, this can change.