Support for lock/logout/remove accounts from account list (#1826)

* Support for lock/logout/remove accounts via long-press

* establish and set listview height before showing

* undo modification

src/Core/Abstractions/IStateService.cs

@@ -12,6 +12,7 @@ namespace Bit.Core.Abstractions
     {
         List<AccountView> AccountViews { get; }
         Task<string> GetActiveUserIdAsync();
+        Task<bool> IsActiveAccount(string userId = null);
         Task SetActiveUserAsync(string userId);
         Task<bool> IsAuthenticatedAsync(string userId = null);
         Task<string> GetUserIdAsync(string email);