changes after feedback from matte

Two new certificate statuses are introduced, 'audit_passing' and
'audit_notpassing'. These signal that the GeneratedCertificate is not
to be displayed as a cert to the user, and that they either passed or
did not. This allows us to retain existing grading logic, as well as
maintaining correctness in analytics and reporting.

Ineligible certificates are hidden by using the
`eligible_certificates` manager on GeneratedCertificate. Some places
in the coe (largely reporting, analytics, and management commands) use
the default `objects` manager, since they need access to all
certificates.

ECOM-3040
ECOM-3515

This reverts commit 60860e3a.

An `eligible_for_certificate` field is added to the
GeneratedCertificate model. This way we can retain existing grading
logic, as well as maintaining correctness in analytics and reporting.

Ineligible certificates are hidden by using the
`eligible_certificates` manager on GeneratedCertificate. Some places
in the coe (largely reporting, analytics, and management commands) use
the default `objects` manager, since they need access to all
certificates.

This commit also updates the DB cache for acceptance tests.

Edited text strings in the default template for web certificates to remove wording specific to edx.org. Addresses DOC-2543.

removed print statement

removed unnecessary status code assertion

If platform name or "All rights reserved" translation contain non-ascii characters,
certificate HTML view would break with "'ascii' codec can't encode character...".

fixed broken tests and added some optimisations

fixed migration history

further code refactoring and added test

fixed tests and internationalisation issues

added translators comment and pulled text to same line

changes based on feedback

updated doctoring to make it more unstandable

further optimizations

further improvement in handling of unicode data

* talbs: Remove obsolete stuff
* frrrances: remove base and distinguished sass references and image assets
* mattdrayer: Cleaned up JSON syntax for test setups

renamed test's name

Fixed bug: When certificate id previewed by a user who already has a
certificate generated with different mode it would not display
certificate in right preview mode.

Fixed bug: When certificate id previewed by a user who already has a
certificate generated with different mode it would not display
certificate in right preview mode.

fixed broken tests and quality violations

moved twitter_url to view also

escaped string for js

* added certificate template model
* added certificate template asset model
* added django admin configs and migration
* initial LMS template matching logic
* improved LMS template matching
* improved LMS template matching and rendering logic
* address Django admin form/model load order incongruence
* add missing unique constraint migration.

* Add new role for support staff.
* Move dashboard/support functionality into a new Django app called "support".
* Add support view for searching and regenerating certificates.
* Refactor certificates views into separate files.

* asadiqbal08/SOL-1058: Add edx-organizations to certificate web view
  * Support organization logo asset management
  * Remove organization fields from Studio certificate configuration model

* SOL-981 pull request feedback fixes

fixed broken test

changes based on feedback on 6/24

fixed broken unit test after feedback changes

added more checks and updated tests

fixed broken bok choy test

Fixed pylint quality error

trying to fix pylint quality error

some optimisations

refactored code and added created event

added test to make sure generate event is emitted

changes based on feedback on 6/11

added certificate web page and tests

fixed quality violations

Allow microsites to override content

more test checks

Fix pylint error (duplicate import)

SOL-971 Changes