Overhaul for site

Included in this is:

* Rails 4 upgrade
* Views updated, using Semantic UI framework
* Bug fixed within event importer (now checks to see if event was pulled from lanyard)
* Converted hash rockets to new ruby syntax
* Installed `dotenv` to manage environmental variables
* Removed `database.yml` from version control
* Created `.ruby-version` and `.ruby-gemset` files

Not included:

* Updated README