Edx-proctoring

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* Add simple history to proctored exam attempt, writing both old and new model for now. Includes admin view.
* Update documentation and makefile targets for a clear path from clone to running tests.

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* Add edit button to grouped allowances, which allows instructors to edit the value of a single allowance.

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* If verified name functionality is enabled through the "name_affirmation" runtime service,
use it in proctored exam attempt creation. (see https://github.com/edx/edx-name-affirmation)
* When updating a proctored exam attempt to "verified" status, update the user's verified
name status, if verified name functionality is enabled and they have one linked to that
exam attempt.

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* Removed name field in proctored exam attempt from the DB.

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* Added feature behind the bulk allowance waffle flag that groups allowances by users.
* Updated the UI so allowances are under dropdown for each user

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* Removed use of name field in proctored exam attempt admin.