Add bingo for clicking "Report a problem"

Summary:

Test Plan:
* copy to webapp/substate
* add a console.log
* submit an issue
* see the log!

Reviewers: eater

Subscribers: alpert

Differential Revision: http://phabricator.khanacademy.org/D7619
Consider angles adjacent on the other side as well

Summary:
I originally just extended the existing code to handle the other way,
but given this change I found it more obvious to just say that a valid
answer is any (valid) angle which shares at least one of the rays.

Test Plan:
* http://localhost:8000/exercises/exploring_angle_pairs_1.html?seed=168&problem=adjacent&debug&lang=en
* Ensure BGA works.

Reviewers: eater, peter

Reviewed By: eater, peter

Subscribers: alpert

Differential Revision: http://phabricator.khanacademy.org/D7570