Very Minor tweaks to the LMS and CMS startup.

I was going to do something in the startup code, then changed my mind,
but didn't want to just discard these changes.
Merge pull request #2069 from edx/ned/minor-startup-fixes

Very Minor tweaks to the LMS and CMS startup.
Add options to dump_course_structure to output inherited metadata.
Add tests for inherited metadata to test_dump_course, and move to commands/tests dir.
prevent failure when module does not have a data field
Merge pull request #1682 from mulby/gabe/fix-get-items-without-data

prevent failure when module does not have a data field
Studio: adds in developer-centric Sass file
* provides new .scss file for developers to add temporary/in-progress Sass for further refactor/polish
* cleans up note/import order in shame and application Sass files
LMS: adds in developer-centric Sass file
* provides new .scss file for developers to add temporary/in-progress Sass for further refactor/polish
* cleans up note/import order in all application scss files
Merge pull request #2047 from edx/talbs/studio-devscss

Studio: Developer-centric Sass Area
Merge pull request #2046 from edx/talbs/lms-devscss

LMS: Developer-centric Sass Area
Merge pull request #2008 from edx/brian/dump-inherited-metadata

Add options to dump_course_structure to output inherited metadata.
Assign valid content_type to static resource (import_static_content)
STUD-878