Prevent cross site request forgery (CSRF)

Adding this block of code adds an authToken to our http header and
prevents CSRF
Teacher submits behavior via Angular on single pg
Add indicator for selected student
Button is disabled until all data is filled in
Teacher can submit behavior for multiple Students
Merge pull request #42 from iericallen/ea-sg-refactor-student-behavior-submission-to-js

ea-sg Teacher submits behavior for multiple Students