#82: Added image for Enonomics and Finance tile. #73: Updated user menu to show user joined date. Converted header logo to svg to support high dpi screens.
Updated version number for new release
Added store manifest file to support pre-installations.
Issue #90 - Fix user info menu to be a flyout since menu will no longer work with 8.1
Issue #90 - Get sizing working. Deprecation guidelines will be implemented in #19

Conflicts:
	KhanAcademy/package.appxmanifest
Issue #92 - Fix math menu which now contains so many topics that it overflows off the screen
Issue #93 - Update layout wasn't being called for menu repositioning since 8.1 upgrade
Issue #95 - 50% split hides some of new and noteworthy section
Issue #96 - Snapped view for topic and subject pages hide title and back button
Merge pull request #98 from bbondy/win8.0

Win8.0