fix(create user profile): Check who is updating a Profile

[wasibani-roy]

What does this PR do?

• This PR ensures that only the user of the profile can update it

Description of Task to be completed?

• A user should be able to only update his user profile

How should this be manually tested?

• Clone the repo, cd into Ah-backend-aquaman and checkout the branch bg-fix-update-profile-164657442

1. pip install -r requirements.txt
2. python manage.py makemigrations
3. python manage.py migrate
4. python manage.py runserver
5. Register and create an account

• Use this endpoint to update your profile :
  PUT http://127.0.0.1:8000/api/profiles/username/edit

What are the relevant pivotal tracker stories?

- #164657442

Screenshots

Updating a profile thats not yours

Updating your profile

[codeclimate]

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[Peace-Apple]

Good work Roy, It now works fine

[Peace-Apple]

Wow, thanks for working on the email as well.