Worker can save files to s3, the sqs publish the url of the files .(have some problems with the png files)
Handeled exceptions, worker can save files and images to s3
handleMessage() now handles 'shutdown' messages, still has TODO on it though; main() works in a loop now and waits for 'shutdown' messages; Added new logger format (+class) to log with one-liners instead with 2 lines; Lots of cosmetic changes - added spaces for ,+){ etc.