added profile picture change to user detail screen

[Justin-Ferwerda]

This PR adds the ability to change your profile picture directly from the User Detail page via a modal.

To Test:

git fetch origin update-profile-pic

git checkout update-profile-pic

python manage.py migrate

python manage.py runserver

• Log in as a regular user

AC:

• There is a button under the profile pic that says change profile picture
• You can upload a photo
• After submitting the item, you are taken back to the user detail page with an updated photo.