sarah | add files to gitignore and upgrade ruby version
sarah | rename product areas
sarah | specify js load order, remove store path chart, add coupon activity chart, change coupon text, modify visit page layout
sarah | fix visits controller from confusing customer id and membership number
sarah | fixed up customer id vs membership number *again. add ajax updates to coupons list
sarah | refresh pie chart data with ajax
sarah | prevent double loading of js files
sarah | update visit table with ajax
sarah | refactor product areas visited
sarah | update visit activity graph with ajax (hard coded data)
sarah | get real data for activity chart, update colors