PHP-GSM

Merge pull request #4 in PHP/php-gsm from develop/1.0 to master

* commit 'bc7edcad094b2f2386715c928e748b3ee525a027':
  * The arrays that will be decoded will now reset each round to prevent that strings are appended to the returning output * If header count mismatching when fetching UDH, one empty DATA_UDH is created, to indicate that the UDH is missing and contains only one message * Hdrlen is now pushed into PDULIB as first parameter, not the last * SMS Header unixtime is now validating time by isset, if missing * SMS Data part using 1 instead of 0 in position * Added leftovers for SMS data part if missing * Code adjusted by phpstorm
  * Moved UDH_HDR_LENGTH to the initial part of UDH-class * Code adjusted by phpstorm
  * Non-Blocking mode by constructor fix * Reconnet on disconnection, when using send() * Moved usleep to the end of getModemData() * Cleaned up junk * Adding decoded data in listview * Code adjusted by phpstorm