Init explore routes and controller
Init view for explore
Initial cucumber feature
Add explore link for navbar & initial view for Explore
Make activity-well a partial
Load random activities from database and render them in view
Work on Explore view
Initial cart
Fix '/activities' route bug
Add ItineraryItems model and inital specs
Update Trips and Activity specs
Add validations to belongs_to assocations
Add tests, validate times for itinerary