Fix the CSS for the feedback tab.
Made the filter-by-debris-type thing not push the buttons out of the
screen.
Removed some inline css.
Fix some tab stuff to be like the rest of the file.
Added 'filterable' boolean to Layer

- Added migrations (schema and data)
- Updated fixtures
Fix and make the datepicker better.
Add filterable to Layer.toDict.

- Also added JSON content type to get_json.
Added filter icon to filterable layers on DATA and FILTER tabs.
updating media requests in mobile-map