Edc

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- add constants (edc-constants)
- fix misspelled attr (edc-dx-review)

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- change `appointment.appt_type` model field to foreign key and
get choices from list_data. (edc-appointment)
- add settings attributes for default appt_type choices, referenced
in list_data, and default value. (edc-appointment)
- add fields familiar_name, full_name to registered subject
(edc-registration)
- add late lower and upper to visit class (edc-visit-schedule)
- now can customize name field and identity regex using class attrs
on SubjectListboardView (edc-listboard)
- add option to customize identifier field name for utils and
other funcs. (edc-randomization)

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- remove 'None' choice from 'cause_of_death_agreed' in Death Report TMG (edc-adverse-event)
- fix AE TMG Report readonly fields not pulling in ae_description,
ae_classification etc. (edc-adverse-event)

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- add missing migrations (edc-protocol-incident)
- update docs on creation of MySQL users for connections from remote Django hosts

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- add option to withdraw AE after TMG review on AE followup (edc-adverse-event)
- add investigator AE classification if not in agreement with initial
(edc-adverse-event)
- add option to withdraw incident report (edc-protocol-incident)

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- add `language` to site class, `languages` to site_profile model
and intercept choices in modeladmin mixin (edc-sites)
- update verbose_name and help_text on `familiar_name` field (edc-model)