Added attached files to study view's assay page
Merge pull request #98 from PhenotypeFoundation/bundle_modules

Added attached files to study view's assay page
Fixed "Unauthorized" for api index
Enables 'guest' user to download files attached to an assay of a public study via study view.
Some minor improvements for view -> study -> assay -> files.
Implemented first version of new study editing wizard containing
- editable, sortable and filterable datatable
- drag-and-drop timeline for setting up design
Merge branch 'master' of https://github.com/PhenotypeFoundation/GSCF into temporary