About page

Includes:
* Pretty URLs
* Relative paths for assets
* Removed unnecessary .css files
* Button mixin
Necessary style tweaks

Includes:
* Bullets for description list
* Removed unnecessary `.dummy`s from elements
* Fixed styles for hero Register link
* SVGs replaced PNGs
* Links are rails orange
* Some animation for hover state in header logo
Clarify how to get Eventbrite access token

Only those who have Heroku or RBB Eventbrite account access will be able to grab
the code.
Ignore tags file
Move helper files to helpers directory
Show description summary instead of bulleted details

When there is no description available, we'll show some placeholder text.
Remove trailing _to in method rename
Resources page

Includes waypoints.js and links.yml. Footer also added to internal pages
WIP: embed MailChimp form