Work on issue #26 Perform a data migration to make original_email and email the same for existing data
Change the database models to deal with duplicated IDs

-make email an index instead of the pk (models + schema migration)
-make original_email unique (models + schema migration)
-add authoritative BooleanField, currently with default to true
-add index to Uploads model email_changer
Fixes issue#27 remove is_active: forgot to remove references from views.py and build_people_db.py
Create model method for merging
-make the email of the unauthoritative identity the email of the authoritative identity
-changes all upload email_changer to authoritative email
-merge the fields first_upload, last_upload, ubuntu_dev, total_uploads, and contacts for the authoritative identity
-contacts can't be recreated, but it won't be a problem in v2 b/c the comments framework is deprecated
Create model method for merging
-added merging for notes
Create model method for merging
-added save() method
Make views deal with only querying authoritative identies
-change group base
-change contributor list to only take authoritative identities
-make person_detail only fetch the email that is the authoritative
Created model method for merging
-fixed a bug by changing email to original_email
Make the frontend work for merging identities
-create datalist in person.html with the format with GET, next commit will change it to work with POST
Make frontend work for merging identities
-changed urls, views, and person.html so that merging identities uses POST instead of GET
Create model method for merging
-added a change to notes so they only get recorded if there are any
Change import commands to set the new fields being used for merging identities
-migrate-upload-data creates uploads with original_email and updates email_changer on new uploads for nonauthoritative people
-change People.get_or_create to include original_email
Change import commands to set the new fields being used for merging identities
-Added logic to ensure that if someone is an debian dev they cannot unbecome one