Prep marketing iframe and relevant courseware view for email opt-in

Feature flagged. Puts a checkbox in the iframe. The iframe uses an organization_full_name parameter forwarded from Drupal by the courseware views and POSTs an email_opt_in parameter to the student views, preserving it on 403.
Update translations (autogenerated message)
ECOM-691 cleaned up spacing and updated title for about section
Hooking the logistration page into the new HTTP endpoint for email opt in.

Update the PR based on Code Review comments, and additional tests.

Using underscore js
Add paver option to specify js-test-tool port

This includes an upgrade to a newer version of js-test-tool that accepts
an option to specify the port number.
Merge pull request #6101 from edx/sarina/20141201-update-translations

Update translations (autogenerated message)
Merge pull request #6079 from edx/sanchez/logistration-opt-in

Hooking the logistration page into the new HTTP endpoint for email opt in
removed dev_ike and dev_shared_preview
Merge pull request #6103 from edx/alasdair/ECOM-691-footer-updates

ECOM-691 cleaned up spacing and updated title for about section
Merge pull request #6102 from edx/gprice/js-test-port

Add paver option to specify js-test-tool port
Update the student views to accept the email_opt_in parameter

Includes tests checking that the student views integrate with the profile API as expected.
Merge pull request #6062 from edx/renzo/email-opt-in

Updating the marketing iframe, courseware views, and student views for email opt-in
Merge pull request #6098 from edx/db/remove-unused-envs

removed dev_ike and dev_shared_preview