first commit
Json file input
Implement flip and back button
Update position of items
Merge branch 'json-read-function'

Conflicts:

memorize.xcodeproj/project.xcworkspace/xcuserdata/yoshi.xcuserdatad/User
InterfaceState.xcuserstate

memorize.xcodeproj/xcuserdata/yoshi.xcuserdatad/xcdebugger/Breakpoints_v
2.xcbkptlist