Authenticate and/or login using Khan Network Profile

[mustefa]

• As a a user, I'd like to pull my proficiencies from my Khan Academy profile to get contextual help with what I'm weak with
• I'd like to pull my proficiencies from my Khan Academy profile:
  • As a learner: to get contextual help in topics with which I'm struggling
  • As a teacher: to get give contextual help for topics I'm proficient at to students that are identified as struggling with those topics
• Access to Khan Academy Profile to populate user profiles via API
  • We're doing this to jumpstart the Matching System by leveraging the pre-determined proficiency of Khan Academy's user base in Subjects and Topic areas
  • An example of subjects are Math and Science, while Topic areas are arithmetic, and biology.

[mustefa]

@hasghari This has already been done. Please feel free to close it if we've met everything