Merge pull request #20 from saily/master

Add getObjSize for Image and File types
Test coverage sections added to buildout.
Move schema definitions to schema directory.
Fix coverage
gitignore updated.
prevent the importContent step from being run over and over again
prevent the importContent step from being run over and over again
Upgrade step to move fti.model_file to schema folder.
Functional test for news item added.
Merge pull request #21 from pysailor/master

 Prevent the importContent step from being run over and over again
Update CHANGES.
Add build status image