Support to easily add profile pictures from the app

[ghachey]

The easiest way to get all the profile pictures into the system would likely be through the app since the tablet or phone almost certainly contains a camera enabling taking a photo "on the spot". Build support for a logged in teacher to load all his/her student profile pictures (and its own profile picture).

Updating students profile pictures. Under student tab, simply click on any of the student profile picture as shown below. This would load a pop up saying "You can add a student profile picture by taking a photo of your student". The app will need to request camera usage permissions.

Updating the teacher profile would be done in a similar way, the teacher would click on his/her profile picture as shown below to get the pop-up and the chance to use the phone camera.

This will send the picture to the server and may require a small API addition on the backend. Only a single profile picture is necessary so uploading more than once will simply overwrite any previously loaded version.