Fix issue saving permissions associated to global roles

Oqtane.Server/Repository/Interfaces/IRoleRepository.cs

@@ -7,6 +7,7 @@ namespace Oqtane.Repository
     {
         IEnumerable<Role> GetRoles();
         IEnumerable<Role> GetRoles(int SiteId);
+        IEnumerable<Role> GetRoles(int SiteId, bool IncludeGlobalRoles);
         Role AddRole(Role Role);
         Role UpdateRole(Role Role);
         Role GetRole(int RoleId);

Oqtane.Server/Repository/PermissionRepository.cs

@@ -192,7 +192,7 @@ namespace Oqtane.Repository
         public List<Permission> DecodePermissions(string PermissionStrings, int SiteId, string EntityName, int EntityId)
         {
             List<Permission> permissions = new List<Permission>();
-            List<Role> roles = Roles.GetRoles(SiteId).ToList();
+            List<Role> roles = Roles.GetRoles(SiteId, true).ToList();
             string securityid = "";
             foreach (PermissionString permissionstring in JsonSerializer.Deserialize<List<PermissionString>>(PermissionStrings))
             {

Oqtane.Server/Repository/RoleRepository.cs

@@ -38,6 +38,19 @@ namespace Oqtane.Repository
             }
         }
 
+        public IEnumerable<Role> GetRoles(int SiteId, bool IncludeGlobalRoles)
+        {
+            try
+            {
+                return db.Role.Where(item => item.SiteId == SiteId || item.SiteId == null).ToList();
+            }
+            catch
+            {
+                throw;
+            }
+        }
+
+
         public Role AddRole(Role Role)
         {
             try

Oqtane.Shared/Models/Role.cs

@@ -5,7 +5,7 @@ namespace Oqtane.Models
     public class Role : IAuditable
     {
         public int RoleId { get; set; }
-        public int SiteId { get; set; }
+        public int? SiteId { get; set; }
         public string Name { get; set; }
         public string Description { get; set; }
         public bool IsAutoAssigned { get; set; }