create API tests and add CKEditor to repo

as per maxs request:
Created a dummy file that creates a task, project, comment and user by sending the correct data to the API in order to test it.
created a dummy file that deletes a task, project, comment and user just to test it
Uploaded the files for the CKEditor
created the email notification for when the admin creates a new user so it tells that user they can set up their password
created a password reset feature in case anyone forgets their password