Port !stats, !role, !wiki and !slap, fix messages in rank, add roleselfservicemodel to db

Geekbot.net/Database/DatabaseContext.cs

@@ -15,8 +15,8 @@ namespace Geekbot.net.Database
         public DbSet<MessagesModel> Messages { get; set; }
         public DbSet<SlapsModel> Slaps { get; set; }
         public DbSet<GlobalsModel> Globals { get; set; }
-        
+        public DbSet<RoleSelfServiceModel> RoleSelfService { get; set; }
+
         // public DbSet<UserSettingsModel> UserSettings { get; set; }
-        // public DbSet<RoleSelfServiceModel> RoleSelfService { get; set; }
     }
 }

Geekbot.net/Database/Models/RoleSelfServiceModel.cs

@@ -1,7 +1,17 @@
-namespace Geekbot.net.Database.Models
+using System.ComponentModel.DataAnnotations;
+
+namespace Geekbot.net.Database.Models
 {
     public class RoleSelfServiceModel
     {
+        [Key]
+        public int Id { get; set; }
         
+        [Required]
+        public long GuildId { get; set; }
+        
+        public long RoleId { get; set; }
+        
+        public string WhiteListName { get; set; }
     }
 }