Move importer list prototype into the importer templates
Disable importer if feature is not enabled
Extend instance_base.html in importer list page
Factor out dict popping for kwarg processing

I see this pattern coming up frequently when processing kwargs, so I think a util would be nice.
Don't clobber reserved words in python
Perform timezone+datesafe equality checking
Merge pull request #1767 from steventlamb/bug/fix_timezone_comparison

Bug/fix timezone comparison
Merge pull request #1766 from maurizi/integrate-importer-prototypes

Integrate importer prototypes
Use the provided domain for password_reset

The context has a domain in it, use it. This requires the sites
framework to be configured properly on the deployment target.
Merge pull request #1768 from steventlamb/bug/hardcoded_domain_in_password_reset

Use the provided domain for password_reset
Add migration to fix species related API errors

In 97b4ea759c some species fields were renamed. These field names were
embedded, as strings, in both FieldPermission models and the Instance
mobile field configuration dictionaries, causing API request to break.

The migration in this commit updates the string values to match the new
Species field names.

Fixes #1769
Merge pull request #1770 from jwalgran/topic/fix-api-error-after-renaming-species-fields

Add migration to fix species related API errors
`DotDict` now supports pickling

Celery task was aborting because its `SpeciesImportEvent` couldn't be unpickled.
That was because its `instance` attribute has a `JSONField`, which uses `DotDict`, which lacked pickling support.
Implement job submission front end

* Make the importer's "list" page use real data (merge OTM1 template with OTM2 prototype)
* Add `start_import_endpoint`
* Submit jobs via AJAX and use returned HTML to update job tables
* When "Import" button pressed, show spinner and disable it
Un-indent template
Rename `list.html` as `imports.html`
Merge pull request #1771 from RickMohr/importer-list-uses-real-data

Importer "list" page now works (for species imports)
In importer, separate `species.py` and `trees.py` from models.py
Merge pull request #1774 from RickMohr/split-importer-models

In importer, separate `species.py` and `trees.py` from models.py
Merge remote-tracking branch 'OpenTreeMap/release'