10/24/2014 Jack add upload file and a function for uploading status.message
10/27/2014 Jack add config/upload function and it's test
Added MaintenanceTaskLib which include file maintenace task with some operations
10/30/2014 Jack Ajust the code of Communication and Log
Update the Copyright header
Merge branch 'AjustCodes' of https://github.com/NateNet/DFLinkDemo.git into ReleaseDemo-20141028
11/12/2013 Jack add push support
11/13/2014 Jack fixed a bug: event nullexception
11/13/2014 Jack the beat function will run 1 times
1.Added ExceptionHandlingController project to management exception
2.TaskManager can support Pull/Push/Mix mode to request the task from server