Merge branch 'release/20130911-release' into develop

* release/20130911-release:
  bump version to 3.1.0
bugfix: image obj class creation failed on newly created projects
no message
bump version to 3.1.1
Merge branch 'release/20130912-release'

* release/20130912-release:
  bump version to 3.1.1
  no message
  bugfix: image obj class creation failed on newly created projects