Lawina

1. check user files (count bytes, count number of files)
2. rsync data to central space (as user or root?)
3. start lawina proper
   1. create source and target list, testing if targets are accessible
   2. select source from source list and select random target list
   3. start copy thread, monitor progress and display
   4. when done, add target to source list
   5. end loop when target list is empty