added menu service, updated target to 8.0
added constants. updated menu fetching for error
updated endpoint constants
added main storyboard
renamed cart tvc
updated cart presentation to segue
used appearance proxies to set app-wide style
added item detail vc
updated menu detail vc

set up basic view in storyboard, template impletation
renamed cookiekit to basketservice
set up cart tvc
renamed cart tableview cell