specify media root in CMS and allow http scheme in aws_appsembler by env token

[bryanlandia]

SCORM XBlock using filestorage requires specifying MEDIA_ROOT in cms as well as lms.
Also, allow specifying HTTPS setting to off via BASE_SCHEME env token from server-vars, for situations where we are using aws_appsembler env on a staging server w/o SSL certs set up. Normally only devstack envs has HTTPS settings off

[bryanlandia]

The last commit 500e7f4 is to fix a subsequent merge conflict resolution that chose the wrong commits. It's not related to the other commits, sorry, but trying to get this resolved quickly.

udpate: this last commit was refactored to another PR.

[OmarIthawi]

@bryanlandia Could you please let me know the why you're refactoring (' -> " and the spacing)?

It's a bit difficult to separate the signal from the noise in this file.

[OmarIthawi]

Why are do we have a build if it fails all the time? I'd just remove it.

[OmarIthawi]

It's not clear what have changed in advanced.js. Please consider refactoring in a separate PR. Or at least a separate final commit.

[bryanlandia]

@OmarIthawi Thanks. As you suggested, I removed the last commit to refactor as another PR.

[bryanlandia]

@OmarIthawi - The other PR is #169

[OmarIthawi]

Thanks @bryanlandia! Looks much better. One note (it might be unnecessary though). For the following conditions we might have a problem with this PR:

• Client X needs Scorm and,
• Requires a multi-edxapp servers setup

In this case the MEDIA_ROOT can't be used. Otherwise a better backend should be used. Therefore w should be able to configure DEFAULT_FILE_STORAGE to something like storages.backends.s3boto3.S3Boto3Storage.

If the latter is not a problem please feel free to merge. Otherwise I think it is worth fixing.

[bryanlandia]

Thanks Omar. Right now, because of cross domain security issues in the browser, SCORM assets can't be stored in S3. We would need to use cloudfront in that case. I haven't worked that out yet.

[OmarIthawi]

Thanks Omar. Right now, because of cross domain security issues in the
browser, SCORM assets can't be stored in S3. We would need to use
cloudfront in that case. I haven't worked that out yet.

Not sure that I understand why, please let me know if you'd like me to jump in. I should able to help in such issues.

It looks good to go! Please feel free to merge it.