Merge pull request #319 from wgerlach/master

new feature: support for dots in filenames ;-)
Added debug messages for checking out workunits.
Merge pull request #320 from jaredbischof/master

Added debug messages for checking out workunits.
Missing imports.
Merge pull request #321 from jaredbischof/master

Missing imports.
Merge branch 'master' of github.com:MG-RAST/AWE