New version of SMSCON v0.4.4-5 also coming up

FIX:
- minor bug fixes/improvements.
- COM_CALL command fails if used.
- In test modes current active network will be restored after GPRS connection usage.
- improved smtp server connection handeling. Will handle errors beter.
- removed "Internet connection" setting to default "GPRS".

NEW:
- COM_CHECK command will return a SMS with all available SMS commands (usefull if forgotten the SMS commands).
- SSH connection is adapted for authenticated keys usage. (have to manually install keys) * not tested yet*
- Email sending can now use secure authentication (STARTTLS) if requested by mail server (tested with Google Gmail).