Fixing webapp problem with logback and slfj4

The logback library was conflicting with slfj4. So those libraries were removed and the clouddrive.jar on webapp was updated.
Fixed: web_clouddrive wasnt storing file with UUID

Removed some comments on SwiftFileSystem.
Merge branch 'master' of https://github.com/TERENA/CloudDrive

Conflicts:
	src/web_clouddrive/lib/clouddrive.jar