Merge pull request #323 from grischa/develop

fixed bug where bleach tag attribute setting was ignored
Added messages to portal_template.
Updated message block on portal_template.
Added dismiss feature to message.
Changed outer div id and reinstated message-container div.
Merge pull request #329 from nrmay/messages

Messages with django messages contrib
added full jquery for debugging purposes
objectacl bug fix
renamed dataset_file to datafile, added migrations and added rudimentary new storage code
rewrite of python 2.6 incompatible code
pre delete of replica/location
removed Replica and Location models, untested still
some bug fixes and migration to remove old tables
sftp server with first listings working
datafiles list now, too
sftp improvements
trying to fix setuptools/buildout issues
added verified filtering to Replicas
added more Replica filtering options for url
migration uses less memory and outputs progress information