UUID
Merge pull request #103 from xuy/master

Fix saveas server error
Merge branch 'master' of https://github.com/xuy/MicrobesFluxSource into task_uuid
Merge branch 'master' of https://github.com/microbesflux/MicrobesFluxSource into task_uuid
port to the uuid storage system for dfba and fba tasks
added new tests for email sending logic
Merge pull request #104 from xuy/task_uuid

Use UUID to store all intermediate files
Remove files that are not needed anymore
Merge pull request #106 from xuy/task_manager

Remove files that are not needed anymore