Checkboxes added
Added script to deal with changes
Revise form to require at least one study type
Merge pull request #238 from UPDDI/Issue-#237

Issue #237
Added date hierarchy to cell samples list display.
Newest migration from Prody
Added date hierarchy to AssayChipReadouts and AssayPlateReadouts
Changed AssayStartDateTime and ReadoutStartDateTime to Date fields instead of DateTime fields.
Merge pull request #241 from UPDDI/Issue-#239

Issue #239
Early work for user authentification
Add early templates for registration
Early registration
Test permissions on some simple views
Early work for user authentification
Early registration
Change out admin/base.html
Test out has_group filter
Early work for group privacy
Add comment to clarify
Make blocks for loading/inserting scripts; start generic inline_add