Installs acts_as_votable gem and runs the migration
Sets user as the voter and event venue as the votable model
configures routes to allow for both like and unlike actions and adds an action in the EV controller to handle voting
Fixes a bug in the name of the voting action in the EV controller and adds working links for liking and unliking events in the views
Adds colour to checkboxes in the RSVP date form in the show ES page so users know which dates they've selected