Further update to rename spw to oerpub.remix.

This was done on testing long ago. Replicating here directly because
of the confusion that arrises from the difference.
Add missing __init__.py
Complete renaming of spw to remix.
Merge pull request #9 from oerpub/ticket411

refs #411: save both the html that Aloha presents to the server and the ...
Remove old bundles from aloha settings.
Merge branch 'ticket430' into testing