Added Tumblr Seeding Tasks

`rake tumblr:posts` will load all non-duplicated tumblr posts
fixed photo url method to call super without args
Added `/visuals` page

Displays visuals that will be loaded from tumblr periodically
Added `Delayed::Job` support for visual syncing

`workless` gem allows heroku to scale workers for free
removed .env from version control
Added Pagination and Base stylings
merged with master