Added Context-Sensitive Help
Pinning libsass to 0.5.1
Feature-gated enrollment demographics

The navbar item is now behind a switch.
Merge pull request #173 from edx/demographics-switch

Feature-gated enrollment demographics
Merge pull request #167 from edx/context-help

Added Context-Sensitive Help
Updated Translations
Corrected Load Error Message
Added Contextual Help to the Demographics Pages
Fill enrollment trend with previous day's count.
Merge pull request #176 from edx/dsjen/fill-enrollment-trend

Fill enrollment trend with previous day's count.
Merge pull request #175 from edx/demographics-help

Added Contextual Help to the Demographics Pages
Corrected link to Developer's guide

@mhoeber , @stroilova
Title, link to dev guide updated
Merge pull request #177 from edx/ahodges/doc/DOC491bis

Corrected link to Developer's guide, fixes DOC-491
Age demographic data table displays unknown ages.
moved natural sort to bower and loaded via require
Merge pull request #178 from edx/dsjen/unknown-ages

Age demographic data table displays unknown ages.
Renamed gender and education demographic table columns.
Disabled Auto-Width for Datatables
Updated Enrollment Filling

- Filling with data from previous day, not next day
- Cloning the original datapoint instead of creating an empty one. (This will be more useful for enrollment tracks)
- Added a separate test for testing the filling algorithm. (Dealing with gaps for all test data is an unnecessary pain)