Fixed MenuItem detail activity to show menu item when not in dining
session
Fix Duplicate items showing up on the list
Updated Menu addition to not add duplicates
Fixed Check out to send User Info instead of dining session. This
supports multiple Users for dining session
Update Dining session check in and check out to support multiple users
per dining session
Updated User test to work(but fail) with new stuff
Merge branch 'master' of https://github.com/mhotan/DineOn into phase5_development
Merge pull request #394 from mhotan/phase5_development

Attempt At fixing bugs revealed in Demo