update main page download link to go to download page instead of directly to zip file; update calendar stepping to reduce reliance on Date.getUTCDate
update brick to use latest xtag core
Fix x-flipbox brackets
Refactor tabbar demo page
Generate index page from template
Merge pull request #29 from bcbcarl/master

Fix x-flipbox brackets
fix timezone issue causing calendar/datepicker to break in non-US regions; fix layout issue w/ 100% height children of flex items; include missing font files
Merge branch 'master' of github.com:mozilla/brick
1.0.3beta release