Fix for http://orchard.codeplex.com/workitem/17112. The Get Started, Register Account and Add User had different min lengths for password.

In looking at the membershipSettings class in Orchard the min length setting is 7.  I changed the add user (UserCreateViewModel) and the get
started (SetupViewModel) to match the min of 7 by modifying/adding a data annotation.

--HG--
branch : 1.x

src/Orchard.Web/Modules/Orchard.Setup/ViewModels/SetupViewModel.cs

@@ -10,7 +10,7 @@ namespace Orchard.Setup.ViewModels {
         public string SiteName { get; set; }
         [UserNameValid(minimumLength: 3, maximumLength: 25)]
         public string AdminUsername { get; set; }
-        [PasswordValid(minimumLength: 6, maximumLength: 50)]
+        [PasswordValid(minimumLength: 7, maximumLength: 50)]
         public string AdminPassword { get; set; }
         [PasswordConfirmationRequired]
         public string ConfirmPassword { get; set; }

src/Orchard.Web/Modules/Orchard.Users/ViewModels/UserCreateViewModel.cs

@@ -10,6 +10,7 @@ namespace Orchard.Users.ViewModels {
         public string Email { get; set; }
 
         [Required, DataType(DataType.Password)]
+        [StringLength(50, MinimumLength = 7)]
         public string Password { get; set; }
 
         [Required, DataType(DataType.Password)]