Comment in instructor dash in response to PR feedback

Inserted by @jrbl and @caesar2164 on behalf of @dcadams.
Adding a YAML file to demonstrate how to include anonymized user IDs in Studio elements.
Revert "experiment for unauthenticated access"

This reverts commit e987b11df8b9c3409b403573200bcab7f887c173.
Merge pull request #1731 from edx/jbau/revert-expt

Revert "experiment for unauthenticated access"
Merge branch 'edx-west/rc-20131120' of github.com:edx/edx-platform into edx-west/rc-20131120
Patch register.html to make all themes use tos#honor.