S3 integration, upload image

[damienaries]

What this PR does (required):

• Upload profile image to s3 in media/images folder
• update DOM with new image

Screenshots / Videos (required):

• Updated DOM
  • Function

Any information needed to test this feature (required):

• Click 'go to profile' link in dropdown (link will be changed when integrating other user profile components)
• click upload a file
• select file
• Should change the placeholder image

  Any issues with the current functionality (optional):

• Does not yet update the user picture url in mongoDB, we can't access loggedInUser.id. So for now fetch adds username to route.
• Do we need to change user interface? logged in user structure different from our DB user structure