multipart gammu incoming message processing - fix to issue #251

process all files for each message an save it as one message
Merge pull request #257 from Mancy/patch-1

multipart gammu incoming message processing - fix to issue #251
taking care of the sender ID if it's name not number
Merge pull request #258 from Mancy/patch-2

taking care of the sender ID if it's name not number
update fatal error report on init
update lang
apply core_display_datetime() on setsmsincomingaction()
fix #256 match with all approved sender ID caused playsmsd crashed due to missing function
fix sms poll coding style
add option single vote only and vote period on SMS poll
add options to sms poll: vote one time, one time every day, one time every week, one time every month and multiple times
move function position
ignore votes on poll disabled
log valid, invalid and out of vote option votes on sms poll
remove this poll has 0 votes mark
add statistics on sms poll
add HTML output and more statistics on SMS poll
add poll access code to protect webservices links in sms poll
change sms_poll_output_* arguments
add export to csv on sms poll