lots of fixes

- Inserts grey header
- Adds logo over header
- Adds sample text under logo (could be changed with logos)
- Adds beta definition at the top of the page
- Removes fancy triangular header for date/time
- Moves date into below intro text
- Moves eventbrite details out of their own column and into a new section
- Adds a schedule organized by blocks 
- Changes footer to be normal caps
- Various style changes and fixes