Added NotApproved to the LiveState
changes in the LiveState.cs: Ok is now Active

override Load() for users: load not deleted users
CalendarMembershipProvider register new user with LiveState "NotApproved"
Added LiveState in the user's frame
HomeService load not deleted users
Home/Index changes
Changes according to the last criteria of the "Logical delete from user" task.
place checkbox instead remove button in the Edit.cshtml view
Merge branch 'master' of github.com:fomaa/Calendar
refactoring: logout user if user delete its account