Add extractor view

[gordonje]

This is our first stab at integrating the Django project with the work text extractor tool.

The plan:

• [ ] Create a base.html template
• [ ] Create cable_file.html and facility_file.html templates (that extend base.html)
• [ ] Use the json-script template tag to render the CableFile/FacilityFile object as json
• [ ] Create a CableFile and FacilityFile view (with @login_required)
• [ ] Have the views just add the CableFile/FacilityFileobjects to the context and render the appropriate template
• [ ] Add a routes for them (maybe admin/fcc_opif/cablefile/extactor/<file-id>)
• [ ] Add links to these in the CableFileAdmin and FacilityFileAdmin