Removed libsass requirement

Latest version of libsass no longer has gcc issue. We no longer need to use the older version.
Removed unnecessary load
Updated Course Homepage Copy
Additional error conditions. Fixes DOC-1063

@shnayder please review
@catong , @mhoeber , @srpearce , I’d like to publish this as soon as
Victor gives the ok.
Merge pull request #202 from edx/ahodges/errors

Additional error conditions. Fixes DOC-1063
typo fix!
Merge pull request #206 from edx/ahodges/1063typo

typo fix!
Added landing page.
Merge pull request #203 from edx/dsjen/landing-page

Added landing page.
Upgraded django-countries

This upgrade includes common country names that should be less controversial.
Setting Administrator Permissions via OIDC

Users updated via OIDC can now be marked as administrators. These administrators will have access to the admin portal as well as permission to view all courses.
Merge pull request #207 from edx/oidc-administrator

Setting Administrator Permissions via OIDC
Fixed Mismatched URLs
Removed Unnecessary Bower Resolution
Feature-Gated Permissions Scope

This scope may not be present on all auth providers.
Hiding Empty Enrollment Modes
Merge pull request #208 from edx/hide-empty-modes

Hiding Empty Enrollment Modes
Fixed Padding on Course Homepage
Corrected Tile Hiding Criteria

This should allow changes of 0 to be displayed. Also, removed the validation setting from local.
Merge pull request #210 from edx/tile-fix

Corrected Tile Hiding Criteria