Propose solution to removed from index unpublished

projects.
Take care of handling exceptions in the handle_save method.

Wrapped up code in a try ... except clause to handle
possible exceptions.
Merge pull request #143 from rapidsms/fixes/#140-removed-unpublished-projects

Propose solution to removed from index unpublished
Merge remote-tracking branch 'origin/master' into fixes/#133-taxonomy-facet-label-displaying-when-there-arent-any

Conflicts:
	website/projects/admin.py
	website/projects/models.py