Merge pull request #269 from wgerlach/master

check if site directory exists
Added error checking to user db initialization.
Added error checking to user db initialization.
Fixed error in client controller auth.
Finished adding auth to work controller.
Added ACL management to clientgroup and job controllers.
Merge pull request #270 from jaredbischof/master

Several updates, see commits.
Update to version number.
Merge pull request #271 from jaredbischof/master

Update to version number.
Merge branch 'master' of github.com:MG-RAST/AWE