changed nav
Added a few sponsors to the Almanac
Added more sponsors. Also added a UL styling
Trimmed images
Added as much sponsor info as possible
Linked all sponsors from sponsors page too
Started stubbing out challenges
Stubbed out some more pages
Adds more details to the challenges page, still pending info
Fix for nav helper to select active link

The nav_link_to wasn't working properly for almanac pages. This fix
checks whether or not the current resource is an almanac page and 
makes sure it's active.
Add Press page
Add Learn section to Almanac

Learn section with pages about presentations, workshops and
lightning talks. Pages still need to be written though.
Comment out almanac nav links to pages that don't exist yet
Move Q&As to Almanac and rewrite of index & schedule
Adding a hr to give some better spacing.
Added iframe for submitting a talk.
Added details coming soon message.
Fixed wrong question copy.
Adjusted dinner time
Adjusted doors open to 9:30