* Add verification deadline model.
* Populate verification deadlines from course modes table.
* Update student dashboard to use verification deadlines.
* Update pay-and-verify view to use verification deadlines.
* Simplify Django admin for course modes and add validation.
* Add verification deadline to Django admin for course modes.
* Add UI for when the upgrade deadline is missed in the pay-and-verify flow.

ECOM-1612

* Ensure that VerificationStatus is append-only and immutable.
* Allow searching by student for verification status.
* Properly pluralize verification status.
* Use ConfigModelAdmin for ICRV config model admin.

TNL-1886

ECOM-1477

ECOM-1228

due to expiration.

LMS-2192

Added a banner that students can use to dismiss the "you have failed reverification" message.  Also, removed unused code, wired up the sidebar for design

Added verification sidebar, banner for major courseware sections, quality & test improvements

Improved tests, fixed javascript for photocapture, removed extraneous photocapture code, added time & course numbers to templates for design

Quick-and-dirty end-to-end flow, functional for at least the case of one course in need of re-verification.

Ready for design to start taking a look; still needs tests and code cleanup

Refactored from code in Stanford's itemized revenue reports into a new Report class used for all revenue-related reporting.

Models for all cert types complete; test coverage for half of cert types complete.

If this architecture is deemed solid, the next steps are to add a reasonable UI folks will use to select reports to download, allow them to restrict based on dates/universities, and of course complete test coverage.

* make `user_status` more intelligent
* remove some logic from the templates
* rename `parse_error_msg` to `parsed_error_msg`
* fix up and add more tests

LMS-1387

LMS-1387

LMS-1133