use the second if with NGINX_SET_X_FORWARDED_HEADERS

introduce new variable NGINX_REDIRECT_TO_HTTPS for redirect

simplify the logic

fixed the typo

change the if statement logic

nginx error fix

apply the last fixed to all the required templates

Auto confirm for gcc/g++ ppa

`sandbox.sh` hang at the step when it add the gcc/g++ ppa for user respone(yes/enter), you make it better to make it auto install without user interaction. Thanks

fix the shell if syntax

fix the shell if syntax

Revert "Auto confirm for gcc/g++ ppa"

The unique constraint was removed in our fork, this sed is a no-op
https://github.com/edx/django-openid-auth/commit/ea49a01d85cb2fccc5fe34f3d0e042dc1deaf8e8

Similar to the core ansible/abbey change made in
https://github.com/edx/configuration/commit/06153b69cf39e955b1c834f580cb96c000c70f4e

Override for docker in the docker overrides.

Sandboxes don't have a 'db' host like docker will.  They need to use 'localhost' for mysql.

https://docs.djangoproject.com/en/1.8/ref/django-admin/#syncdb

- Creating DNS entry
- Specifying correct ports
- Enabling nginx site for CI builds
- Resolved nginx default site issues
- Fixed issue with OAuth client creation
- Setting LMS URL
- Corrected ecommerce repo

ECOM-2755

This one has programs NGINX built onto it.